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1、方程的意义Evaluation only.Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0.Copyright 2019-2019 Aspose Pty Ltd.天平天平“这是什么？是什么？Evaluation only.Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0.Copyright 2019-2019 Aspose Pty Ltd.天平是平衡的继续Evaluation only.Created with Aspose.Slides fo
2、r .NET 3.5 Client Profile 5.2.0.0.Copyright 2019-2019 Aspose Pty Ltd.2030Evaluation only.Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0.Copyright 2019-2019 Aspose Pty Ltd.天平不平衡2030Evaluation only.Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0.Copyright 2019-2019 Aspos
3、e Pty Ltd.203050Evaluation only.Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0.Copyright 2019-2019 Aspose Pty Ltd.203050Evaluation only.Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0.Copyright 2019-2019 Aspose Pty Ltd.203050Evaluation only.Created with Aspose.Slides f
4、or .NET 3.5 Client Profile 5.2.0.0.Copyright 2019-2019 Aspose Pty Ltd.203050这是一个等式。天平又平衡了20 +30 =50Evaluation only.Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0.Copyright 2019-2019 Aspose Pty Ltd.20?100Evaluation only.Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0.Co
5、pyright 2019-2019 Aspose Pty Ltd.20+X=100 表示天平左右两边相等Evaluation only.Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0.Copyright 2019-2019 Aspose Pty Ltd.20505010050x2=10050x x18050+2180 80克X克 X克802x180克克X克 X克 X克 10010030100X5050503x=180100+20100+30100+2x=50x3Evaluation only.Created with
6、 Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0.Copyright 2019-2019 Aspose Pty Ltd.练习：20+30=50 802 20+=100 3=180502=100 100+20100+5050+2 180 100+2=350思索：他能思索：他能给这些式子分些式子分类吗？并？并说说是按照什么是按照什么规范分范分类的。的。Evaluation only.Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0.Copyright 2019-2019
7、Aspose Pty Ltd.含有未知数的式子含有未知数的式子 不含未知数的式子不含未知数的式子20+=100 20+30=50 50+2 180 502=100 802 100+20100+50 3=180100+2=350Evaluation only.Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0.Copyright 2019-2019 Aspose Pty Ltd. 等式 不等式20+30=50 50+2 180 20+=100 802 502=100 100+20100+50 3=180100+2=350E
8、valuation only.Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0.Copyright 2019-2019 Aspose Pty Ltd.什么是方程？什么是方程？含有 未知数的 等式 叫方程。Evaluation only.Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0.Copyright 2019-2019 Aspose Pty Ltd.练习：下面哪些是方程？哪些不是方程？ 35- =12 ( ) 0.49 =7 ( ) Y+2
9、4 ( ) 35+65=100 ( ) 5 +32=47 ( ) -14 72 ( ) 28 16+14 ( ) 9b-3=60 ( ) 6(a+2)=42 ( ) +y=70 ( ) 910Evaluation only.Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0.Copyright 2019-2019 Aspose Pty Ltd.张强也列了两了式子，不小心被墨水弄脏张强也列了两了式子，不小心被墨水弄脏了。猜猜他原来列的是不是方程？了。猜猜他原来列的是不是方程？1 6X + =78 2 36 + =42 Ev
10、aluation only.Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0.Copyright 2019-2019 Aspose Pty Ltd. “方程一定是等式，等式也一定是方程 这句话对吗？他能用本人的方式表示方程和等式之间的关系吗？Evaluation only.Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0.Copyright 2019-2019 Aspose Pty Ltd. 方程与等式之方程与等式之间 的关系的关系等 式方程E
11、valuation only.Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0.Copyright 2019-2019 Aspose Pty Ltd.方程一定是等式；但等式不一定是方程。Evaluation only.Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0.Copyright 2019-2019 Aspose Pty Ltd.判别题1含有未知数的等式是方程含有未知数的等式是方程( )2含有未知数的式子是方程含有未知数的式子是方程( )
12、3方程是等式，等式也是方程方程是等式，等式也是方程( )430是方程是方程( )5420含有未知数，所以它是方程含有未知数，所以它是方程( )XXXEvaluation only.Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0.Copyright 2019-2019 Aspose Pty Ltd.1、含有未知数的式子叫做方程、含有未知数的式子叫做方程.( )2、方程一定是等式、方程一定是等式. ( )3、等式一定是方程、等式一定是方程. ( )4、842X不是方程不是方程. ( )Evaluation only.Cr
13、eated with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0.Copyright 2019-2019 Aspose Pty Ltd.看图列出方程。X50XX73166X + 73 = 1662X = 50Evaluation only.Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0.Copyright 2019-2019 Aspose Pty Ltd. 经过这一节课的学习，他经过这一节课的学习，他有哪些收获？有哪些收获？Evaluation only.Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0.Copyright 2019-2019 Aspose Pty Ltd.谢谢！再见Evaluation only.Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0.Copyright 2019-2019 Aspose Pty Ltd.
