3x-21=2(4x+2)

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Solution for 3x-21=2(4x+2) equation: 



3x-21=2(4x+2)

We move all terms to the left:

3x-21-(2(4x+2))=0



We calculate terms in parentheses: -(2(4x+2)), so:

2(4x+2)

We multiply parentheses

8x+4

Back to the equation:

-(8x+4)



We get rid of parentheses

3x-8x-4-21=0

We add all the numbers together, and all the variables

-5x-25=0

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

-5x=25

x=25/-5

x=-5

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