3(x+7)-21=-2(x-3)+39

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Solution for 3(x+7)-21=-2(x-3)+39 equation: 



3(x+7)-21=-2(x-3)+39

We move all terms to the left:

3(x+7)-21-(-2(x-3)+39)=0

We multiply parentheses

3x-(-2(x-3)+39)+21-21=0



We calculate terms in parentheses: -(-2(x-3)+39), so:

-2(x-3)+39

We multiply parentheses

-2x+6+39

We add all the numbers together, and all the variables

-2x+45

Back to the equation:

-(-2x+45)



We add all the numbers together, and all the variables

3x-(-2x+45)=0

We get rid of parentheses

3x+2x-45=0

We add all the numbers together, and all the variables

5x-45=0

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

5x=45

x=45/5

x=9

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