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7(5a-4)-1=4
We move all terms to the left:
7(5a-4)-1-(4)=0
We add all the numbers together, and all the variables
7(5a-4)-5=0
We multiply parentheses
35a-28-5=0
We add all the numbers together, and all the variables
35a-33=0
We move all terms containing a to the left, all other terms to the right
35a=33
a=33/35
a=33/35
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