20+c=4c-7

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Solution for 20+c=4c-7 equation:


Simplifying
20 + c = 4c + -7

Reorder the terms:
20 + c = -7 + 4c

Solving
20 + c = -7 + 4c

Solving for variable 'c'.

Move all terms containing c to the left, all other terms to the right.

Add '-4c' to each side of the equation.
20 + c + -4c = -7 + 4c + -4c

Combine like terms: c + -4c = -3c
20 + -3c = -7 + 4c + -4c

Combine like terms: 4c + -4c = 0
20 + -3c = -7 + 0
20 + -3c = -7

Add '-20' to each side of the equation.
20 + -20 + -3c = -7 + -20

Combine like terms: 20 + -20 = 0
0 + -3c = -7 + -20
-3c = -7 + -20

Combine like terms: -7 + -20 = -27
-3c = -27

Divide each side by '-3'.
c = 9

Simplifying
c = 9

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