100=-2(7a-8)

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Solution for 100=-2(7a-8) equation: 



100=-2(7a-8)

We move all terms to the left:

100-(-2(7a-8))=0



We calculate terms in parentheses: -(-2(7a-8)), so:

-2(7a-8)

We multiply parentheses

-14a+16

Back to the equation:

-(-14a+16)



We get rid of parentheses

14a-16+100=0

We add all the numbers together, and all the variables

14a+84=0

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

14a=-84

a=-84/14

a=-6

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