-83=-7(12a+-1)+-10(12a+9)

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Solution for -83=-7(12a+-1)+-10(12a+9) equation: 



-83=-7(12a+-1)+-10(12a+9)

We move all terms to the left:

-83-(-7(12a+-1)+-10(12a+9))=0

We add all the numbers together, and all the variables

-(-7(12a-1)+-10(12a+9))-83=0

We use the square of the difference formula

-(-7(12a-1)-10(12a+9))-83=0



We calculate terms in parentheses: -(-7(12a-1)-10(12a+9)), so:

-7(12a-1)-10(12a+9)

We multiply parentheses

-84a-120a+7-90

We add all the numbers together, and all the variables

-204a-83

Back to the equation:

-(-204a-83)



We get rid of parentheses

204a+83-83=0

We add all the numbers together, and all the variables

204a=0

a=0/204

a=0

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