100X=(9-X)80怎么解

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100X=(9-X)80怎么解100X=(9-X)80怎么解100X=(9-X)80怎么解100X=720-80X去括号100X+80X=720移项180X=720合并同类项X=4系数化为1100x=

100X=(9-X)80怎么解
100X=(9-X)80怎么解

100X=(9-X)80怎么解
100X=720-80X 去括号
100X+80X=720 移项
180X=720 合并同类项
X=4 系数化为1

100x=720-80x
180x=720
x=4

100x=9*80-80x
180x=720
x=4

100x=9*80-80x,180x=720,x=4