10.5)(+6.5)(=51 解方程 89)(-43)(=9.2 5)(-45=100 1.2)(-0.5)(=56 4)(-)(=48.6

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10.5)(+6.5)(=51解方程89)(-43)(=9.25)(-45=1001.2)(-0.5)(=564)(-)(=48.610.5)(+6.5)(=51解方程89)(-43)(=9.25)(

10.5)(+6.5)(=51 解方程 89)(-43)(=9.2 5)(-45=100 1.2)(-0.5)(=56 4)(-)(=48.6
10.5)(+6.5)(=51 解方程 89)(-43)(=9.2 5)(-45=100 1.2)(-0.5)(=56 4)(-)(=48.6

10.5)(+6.5)(=51 解方程 89)(-43)(=9.2 5)(-45=100 1.2)(-0.5)(=56 4)(-)(=48.6
10.5x+6.5x=51
4x=51
x=51/4=12.5
解方程
89x-43x=9.2
46x=9.2
x=0.2
5x-45=100
5x=100+45
5x=55
x=11
1.2x-0.5x=56
0.7x=56
x=80
4x-x=48.6
3x=48.6
x=16.2