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3a/4=-7-a
We move all terms to the left:
3a/4-(-7-a)=0
We add all the numbers together, and all the variables
3a/4-(-1a-7)=0
We get rid of parentheses
3a/4+1a+7=0
We multiply all the terms by the denominator
3a+1a*4+7*4=0
We add all the numbers together, and all the variables
3a+1a*4+28=0
Wy multiply elements
3a+4a+28=0
We add all the numbers together, and all the variables
7a+28=0
We move all terms containing a to the left, all other terms to the right
7a=-28
a=-28/7
a=-4
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