5a+7-3a=-9

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Solution for 5a+7-3a=-9 equation: 



5a+7-3a=-9

We move all terms to the left:

5a+7-3a-(-9)=0

We add all the numbers together, and all the variables

2a+16=0

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

2a=-16

a=-16/2

a=-8

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