2-3a+7a=-4-20

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Solution for 2-3a+7a=-4-20 equation: 



2-3a+7a=-4-20

We move all terms to the left:

2-3a+7a-(-4-20)=0

We add all the numbers together, and all the variables

-3a+7a+2-(-24)=0

We add all the numbers together, and all the variables

4a+26=0

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

4a=-26

a=-26/4

a=-6+1/2

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