4x-40=15-8x

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Solution for 4x-40=15-8x equation: 



4x-40=15-8x

We move all terms to the left:

4x-40-(15-8x)=0

We add all the numbers together, and all the variables

4x-(-8x+15)-40=0

We get rid of parentheses

4x+8x-15-40=0

We add all the numbers together, and all the variables

12x-55=0

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

12x=55

x=55/12

x=4+7/12

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