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8=2.5+c
We move all terms to the left:
8-(2.5+c)=0
We add all the numbers together, and all the variables
-(c+2.5)+8=0
We get rid of parentheses
-c-2.5+8=0
We add all the numbers together, and all the variables
-1c+5.5=0
We move all terms containing c to the left, all other terms to the right
-c=-5.5
c=-5.5/-1
c=5+0.5/1
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