2a-4-a=-5+7

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Solution for 2a-4-a=-5+7 equation: 



2a-4-a=-5+7

We move all terms to the left:

2a-4-a-(-5+7)=0

We add all the numbers together, and all the variables

2a-a-4-2=0

We add all the numbers together, and all the variables

a-6=0

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

a=6

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