2x+4(40-x)=130

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Solution for 2x+4(40-x)=130 equation: 



2x+4(40-x)=130

We move all terms to the left:

2x+4(40-x)-(130)=0

We add all the numbers together, and all the variables

2x+4(-1x+40)-130=0

We multiply parentheses

2x-4x+160-130=0

We add all the numbers together, and all the variables

-2x+30=0

We move all terms containing x to the left, all other terms to the right

-2x=-30

x=-30/-2

x=+15

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