3.6x+3.6(x-15)=486列方程 急急积急经纪

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3.6x+3.6(x-15)=486列方程急急积急经纪3.6x+3.6(x-15)=486列方程急急积急经纪3.6x+3.6(x-15)=486列方程急急积急经纪3.6x+3.6(x-15)=4863

3.6x+3.6(x-15)=486列方程 急急积急经纪
3.6x+3.6(x-15)=486
列方程
急急积急经纪

3.6x+3.6(x-15)=486列方程 急急积急经纪
3.6x+3.6(x-15)=486
3.6x+3.6x-54=486
7.2x=486+54
7.2x=540
x=540÷7.2
x=75

3.6x+3.6(x-15)=486
7.2x-54=486
7.2=540
x=75

3.6x+3.6(x-15)=486
3.6x+3.6x-54=486
7.2x=540
x=75