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7=5a/4
We move all terms to the left:
7-(5a/4)=0
We add all the numbers together, and all the variables
-(+5a/4)+7=0
We get rid of parentheses
-5a/4+7=0
We multiply all the terms by the denominator
-5a+7*4=0
We add all the numbers together, and all the variables
-5a+28=0
We move all terms containing a to the left, all other terms to the right
-5a=-28
a=-28/-5
a=5+3/5
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