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1、1.X 122.4. x 0.6 x = 57.10. 20% x 1 = 455113. x - x = 24453216. x -=855解方程55. 6 宁 3.31 1 18.- x + - x =1-43611. x -3 x =20114. 4 x + Tx = 91117.-x + x =3643418.(1 - ) x *983. 4 x + 7.5 = 1346. x =1059.12.2515. 9 + 2 x =19.3x =20 x 3420. ? x ? x =123521.7 x =-12322. x 1x =923. 4 x+ 7.5= 1324.9.8-2 x
2、=3.825.1 -a+626. x+ 3x =2427.-328.18.65+尹 + 6=0129. x -x =20530. 9=361825132. x 333. 3 x31.5134.161535. x - 一 x =15836. x - - = 0.6237.15 x +6 x = 16838.39. 2 x +5 = 4040. 3.5 x = 14041. 20% x = 3010 542. 5 x 3X=72 143. 5 - 3 x =344. 2 x -45. 1.5 x =2.2546. x510=8 = 17 111647. x 宁=83348. 一 x 30%x =8
3、 203 549. 8 X (x )=-4 450.x=1451.37.5 + 20%x = 69.5414752. x -x = 一152553. 4.2 X 3 3x = 5.154.13.7 x = 5.2955.1456. 20% x 丄=45 557.丄 x+ - x = 1丄43659.5105 x =-7211460.6.37x =57361. x 5 x =15862.x X 20%= 209 314 464. 4 (4 x 1) =3 (22 x)65. 1.5 x =28.566. (0.5+ x) + x=9.8 - 267. 3 x - 2=40568.7 x (2 x
4、 -6 ) =8469. 8 x =42_9 = 314 4”31111一 2673.x4 -74. xx54207775. 1.5 x +6=3 x76.525、23577.(-)xx815123678. 3 x + 2.5 x 8=9579. 5X3-x -2=8580.173x =-204一55小cc14181. x=15082. x 8647283. i x55 ,8_3286. x2384. 6x -=7141385. x-8 - =34810=521 = 1487. 5x3=74888. x7 =212 589.131x =51590. 3x 5=1142291. -x 12 2292. x 15%25.593. x 丄乂 20494. 6 4 1x 12295. x 10%x 3.396. x 24%435097. -x 75%x-5698. 18 150%x7.599. x 60% x =18100. 40%x +30=80
