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-9(-5-4c)=9c
We move all terms to the left:
-9(-5-4c)-(9c)=0
We add all the numbers together, and all the variables
-9(-4c-5)-9c=0
We add all the numbers together, and all the variables
-9c-9(-4c-5)=0
We multiply parentheses
-9c+36c+45=0
We add all the numbers together, and all the variables
27c+45=0
We move all terms containing c to the left, all other terms to the right
27c=-45
c=-45/27
c=-1+2/3
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