-12(5a)+3(5+6a)=7(2-7a)+78

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Solution for -12(5a)+3(5+6a)=7(2-7a)+78 equation: 



-12(5a)+3(5+6a)=7(2-7a)+78

We move all terms to the left:

-12(5a)+3(5+6a)-(7(2-7a)+78)=0

We add all the numbers together, and all the variables

-125a+3(6a+5)-(7(-7a+2)+78)=0

We multiply parentheses

-125a+18a-(7(-7a+2)+78)+15=0



We calculate terms in parentheses: -(7(-7a+2)+78), so:

7(-7a+2)+78

We multiply parentheses

-49a+14+78

We add all the numbers together, and all the variables

-49a+92

Back to the equation:

-(-49a+92)



We add all the numbers together, and all the variables

-107a-(-49a+92)+15=0

We get rid of parentheses

-107a+49a-92+15=0

We add all the numbers together, and all the variables

-58a-77=0

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

-58a=77

a=77/-58

a=-1+19/58

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