13=c-20

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Solution for 13=c-20 equation:


Simplifying
13 = c + -20

Reorder the terms:
13 = -20 + c

Solving
13 = -20 + c

Solving for variable 'c'.

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

Add '-1c' to each side of the equation.
13 + -1c = -20 + c + -1c

Combine like terms: c + -1c = 0
13 + -1c = -20 + 0
13 + -1c = -20

Add '-13' to each side of the equation.
13 + -13 + -1c = -20 + -13

Combine like terms: 13 + -13 = 0
0 + -1c = -20 + -13
-1c = -20 + -13

Combine like terms: -20 + -13 = -33
-1c = -33

Divide each side by '-1'.
c = 33

Simplifying
c = 33

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