357=7(7a+2)

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Solution for 357=7(7a+2) equation: 



357=7(7a+2)

We move all terms to the left:

357-(7(7a+2))=0



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

7(7a+2)

We multiply parentheses

49a+14

Back to the equation:

-(49a+14)



We get rid of parentheses

-49a-14+357=0

We add all the numbers together, and all the variables

-49a+343=0

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

-49a=-343

a=-343/-49

a=+7

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