-2(2a-1)=15

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Solution for -2(2a-1)=15 equation: 



-2(2a-1)=15

We move all terms to the left:

-2(2a-1)-(15)=0

We multiply parentheses

-4a+2-15=0

We add all the numbers together, and all the variables

-4a-13=0

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

-4a=13

a=13/-4

a=-3+1/4

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