-310=7(-5+5a)+5

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Solution for -310=7(-5+5a)+5 equation: 



-310=7(-5+5a)+5

We move all terms to the left:

-310-(7(-5+5a)+5)=0

We add all the numbers together, and all the variables

-(7(5a-5)+5)-310=0



We calculate terms in parentheses: -(7(5a-5)+5), so:

7(5a-5)+5

We multiply parentheses

35a-35+5

We add all the numbers together, and all the variables

35a-30

Back to the equation:

-(35a-30)



We get rid of parentheses

-35a+30-310=0

We add all the numbers together, and all the variables

-35a-280=0

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

-35a=280

a=280/-35

a=-8

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