3a-7a=2-10

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Solution for 3a-7a=2-10 equation: 



3a-7a=2-10

We move all terms to the left:

3a-7a-(2-10)=0

We add all the numbers together, and all the variables

3a-7a-(-8)=0

We add all the numbers together, and all the variables

-4a+8=0

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

-4a=-8

a=-8/-4

a=+2

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