21.5+2c=27.5

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Solution for 21.5+2c=27.5 equation: 



21.5+2c=27.5

We move all terms to the left:

21.5+2c-(27.5)=0

We add all the numbers together, and all the variables

2c-6=0

We move all terms containing c to the left, all other terms to the right

2c=6

c=6/2

c=3

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