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15+8-5(c=7)
We move all terms to the left:
15+8-5(c-(7))=0
We add all the numbers together, and all the variables
-5(c-7)+23=0
We multiply parentheses
-5c+35+23=0
We add all the numbers together, and all the variables
-5c+58=0
We move all terms containing c to the left, all other terms to the right
-5c=-58
c=-58/-5
c=11+3/5
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