3.6x+3.6(x-15)=486
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3.6x+3.6(x-15)=486
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![3.6x+3.6(x-15)=486](/uploads/image/z/914979-3-9.jpg?t=3.6x%2B3.6%28x-15%29%3D486)
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+3.6x-54=486
7.2x=486+54
7.2x=540
x=540÷7.2
x=75