210=7x+7(3x+2)

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Solution for 210=7x+7(3x+2) equation: 



210=7x+7(3x+2)

We move all terms to the left:

210-(7x+7(3x+2))=0



We calculate terms in parentheses: -(7x+7(3x+2)), so:

7x+7(3x+2)

We multiply parentheses

7x+21x+14

We add all the numbers together, and all the variables

28x+14

Back to the equation:

-(28x+14)



We get rid of parentheses

-28x-14+210=0

We add all the numbers together, and all the variables

-28x+196=0

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

-28x=-196

x=-196/-28

x=+7

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