1-2a=-15-4a

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Solution for 1-2a=-15-4a equation: 



1-2a=-15-4a

We move all terms to the left:

1-2a-(-15-4a)=0

We add all the numbers together, and all the variables

-2a-(-4a-15)+1=0

We get rid of parentheses

-2a+4a+15+1=0

We add all the numbers together, and all the variables

2a+16=0

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

2a=-16

a=-16/2

a=-8

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