31-15=4(x-5)

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Solution for 31-15=4(x-5) equation: 



31-15=4(x-5)

We move all terms to the left:

31-15-(4(x-5))=0

We add all the numbers together, and all the variables

-(4(x-5))+16=0



We calculate terms in parentheses: -(4(x-5)), so:

4(x-5)

We multiply parentheses

4x-20

Back to the equation:

-(4x-20)



We get rid of parentheses

-4x+20+16=0

We add all the numbers together, and all the variables

-4x+36=0

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

-4x=-36

x=-36/-4

x=+9

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