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c-5/2=-7
We move all terms to the left:
c-5/2-(-7)=0
We add all the numbers together, and all the variables
c+7-5/2=0
We multiply all the terms by the denominator
c*2-5+7*2=0
We add all the numbers together, and all the variables
c*2+9=0
Wy multiply elements
2c+9=0
We move all terms containing c to the left, all other terms to the right
2c=-9
c=-9/2
c=-4+1/2
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