x+13=4x-8

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Solution for x+13=4x-8 equation:



x+13=4x-8
We move all terms to the left:
x+13-(4x-8)=0
We get rid of parentheses
x-4x+8+13=0
We add all the numbers together, and all the variables
-3x+21=0
We move all terms containing x to the left, all other terms to the right
-3x=-21
x=-21/-3
x=+7

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