3a=-20-7

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Solution for 3a=-20-7 equation: 



3a=-20-7

We move all terms to the left:

3a-(-20-7)=0

We add all the numbers together, and all the variables

3a-(-27)=0

We add all the numbers together, and all the variables

3a+27=0

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

3a=-27

a=-27/3

a=-9

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