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1、精选学习资料 - - - - - - - - - 解方程X 2 7 X=4 32X + 2 5 = 370%X + 20%X = 3.6 5X3 =2051 25% + 10X = 4 X 5- 15%X = 68 4X3 X121 5X 835 2152 X31 12 476X5 =13.4 3 X 413 3X=3488X2 = 77X7 X= 834X62 =2 3164名师归纳总结 - - - - - - -第 1 页,共 5 页精选学习资料 - - - - - - - - - 123 X= 103 X = 5258 X = 91 61657251X6 = 3526 45134x3 9
2、 = 29 1 x + 21 x = 6254 3 X21102 =4 36X5 =13.4 5 X- 1 3 X= 3 104 638 5X= 15198 X= 4 X21 154 = 28名师归纳总结 - - - - - - -第 2 页,共 5 页精选学习资料 - - - - - - - - - 2 X31 =12 43 X= 5258 X= 91 6167251X 6 = 3526 4513X-0.25=1X =30% 42544+0.7X=102 2 X+ 31 X=42 X+ 21 X=105 4X-3 X=400 8X-0.125X=8 36 = X34名师归纳总结 - - -
3、- - - -第 3 页,共 5 页精选学习资料 - - - - - - - - - 3 X+ 7 X=18 X 1 6 + 3 8 =13x0.375x=5126x 3 2 + 2 1 =43X 7 3 X 125 X 2.4 58 80.36 5- 3 4 x = 32 3 x- 4.5 = 7 1 2 x- 25%x = 10 5x- 0.8x = 16+6 20 x8.5= 1.5 x- 4 5 x -4= 21 X 25%X=90 X 3 7 X= 813 +2.4 =6 523.5: =5:4.2 31.8 =2.4 名师归纳总结 - - - - - - -第 4 页,共 5 页精选学习资料 - - - - - - - - - 410 = x25.56 31.8 =7.2 617 5 =2.4+3108.57x = 412.8 1 = 43912.6 5 2 =8 658101x = . 21.5113 51 = 2106.5名师归纳总结 - - - - - - -第 5 页,共 5 页