33X-12X=36 解方程哪 快

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33X-12X=36解方程哪快33X-12X=36解方程哪快33X-12X=36解方程哪快33X-12X=3621x=36x=36÷21x=7分之1233x-12x=3621x=36x=12/712/

33X-12X=36 解方程哪 快
33X-12X=36 解方程哪 快

33X-12X=36 解方程哪 快
33X-12X=36
21x=36
x=36÷21
x=7分之12

33x-12x=36
21x=36
x=12/7

12/7

解方程33X-12X=36 解21X=36 21X÷21=36÷21 X=36/21=12/7

21X=36 X=36/21 X=12/7 (7分之12)