-210=6(5+5a)

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Solution for -210=6(5+5a) equation: 



-210=6(5+5a)

We move all terms to the left:

-210-(6(5+5a))=0

We add all the numbers together, and all the variables

-(6(5a+5))-210=0



We calculate terms in parentheses: -(6(5a+5)), so:

6(5a+5)

We multiply parentheses

30a+30

Back to the equation:

-(30a+30)



We get rid of parentheses

-30a-30-210=0

We add all the numbers together, and all the variables

-30a-240=0

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

-30a=240

a=240/-30

a=-8

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