2(x-3)-21=36-7x

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Solution for 2(x-3)-21=36-7x equation: 



2(x-3)-21=36-7x

We move all terms to the left:

2(x-3)-21-(36-7x)=0

We add all the numbers together, and all the variables

2(x-3)-(-7x+36)-21=0

We multiply parentheses

2x-(-7x+36)-6-21=0

We get rid of parentheses

2x+7x-36-6-21=0

We add all the numbers together, and all the variables

9x-63=0

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

9x=63

x=63/9

x=7

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