求方程.....
(1-40%)x=36
60%x=36
x=36/60%
x=60
6/7x*9/8=3/4
54/56x=3/4
x=3/4÷54/56
x=14/18
x=7/9
3/4x-1/2x=114
1/4x=114
x=114÷1/4
x=456
① (1-40%)x=36
0.6x=36
x=36/0.6
x=60
② 6x/7*9/8=3/4
x=3*7*8/(4*6*9)
x=168/216
x=7/9
③ 3x/4-x/2=114
x/4=114
x=4*114
x=456
⑴(1-40%)x=36
解;60%x=36
去分母得;
60x=3600
系数化成1得;
x=60
⑵6x/7×9/8=3/4
解;方程两边同乘以56得;
6x×9=42
54x=42
系数化成1得;
x=7/9
⑶3/4x-1/2x=114
解;方程两边同乘以4得;
3x-2x=456
合并得;
x=456
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