2a-(7a)=-70

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Solution for 2a-(7a)=-70 equation: 



2a-(7a)=-70

We move all terms to the left:

2a-(7a)-(-70)=0

We add all the numbers together, and all the variables

-5a+70=0

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

-5a=-70

a=-70/-5

a=+14

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