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-5.59=21c+2.6
We move all terms to the left:
-5.59-(21c+2.6)=0
We get rid of parentheses
-21c-2.6-5.59=0
We add all the numbers together, and all the variables
-21c-8.19=0
We move all terms containing c to the left, all other terms to the right
-21c=8.19
c=8.19/-21
c=-6.8823529411765/17.647058823529
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