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6.9c+2=10
We move all terms to the left:
6.9c+2-(10)=0
We add all the numbers together, and all the variables
6.9c-8=0
We move all terms containing c to the left, all other terms to the right
6.9c=8
c=8/6.9
c=1+1/6.2727272727273
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