X=87+4x

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Solution for X=87+4x equation: 



X=87+4X

We move all terms to the left:

X-(87+4X)=0

We add all the numbers together, and all the variables

X-(4X+87)=0

We get rid of parentheses

X-4X-87=0

We add all the numbers together, and all the variables

-3X-87=0

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

-3X=87

X=87/-3

X=-29

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