-20=-2(c+7)

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Solution for -20=-2(c+7) equation:



-20=-2(c+7)
We move all terms to the left:
-20-(-2(c+7))=0
We calculate terms in parentheses: -(-2(c+7)), so:
-2(c+7)
We multiply parentheses
-2c-14
Back to the equation:
-(-2c-14)
We get rid of parentheses
2c+14-20=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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