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

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Solution for -2a+(a+2)-3a=-7 equation: 



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

We move all terms to the left:

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

We add all the numbers together, and all the variables

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

We get rid of parentheses

-5a+a+2+7=0

We add all the numbers together, and all the variables

-4a+9=0

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

-4a=-9

a=-9/-4

a=2+1/4

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