7x+21=2(4x+1)

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Solution for 7x+21=2(4x+1) equation: 



7x+21=2(4x+1)

We move all terms to the left:

7x+21-(2(4x+1))=0



We calculate terms in parentheses: -(2(4x+1)), so:

2(4x+1)

We multiply parentheses

8x+2

Back to the equation:

-(8x+2)



We get rid of parentheses

7x-8x-2+21=0

We add all the numbers together, and all the variables

-1x+19=0

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

-x=-19

x=-19/-1

x=+19

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