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-4a/9-7=3
We move all terms to the left:
-4a/9-7-(3)=0
We add all the numbers together, and all the variables
-4a/9-10=0
We multiply all the terms by the denominator
-4a-10*9=0
We add all the numbers together, and all the variables
-4a-90=0
We move all terms containing a to the left, all other terms to the right
-4a=90
a=90/-4
a=-22+1/2
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