21-3(x-(7))=x+20

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Solution for 21-3(x-(7))=x+20 equation: 



21-3(x-(7))=x+20

We move all terms to the left:

21-3(x-(7))-(x+20)=0

We multiply parentheses

-3x-(x+20)+21+21=0

We get rid of parentheses

-3x-x-20+21+21=0

We add all the numbers together, and all the variables

-4x+22=0

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

-4x=-22

x=-22/-4

x=5+1/2

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