(3-c)5=-20

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Solution for (3-c)5=-20 equation:


Simplifying
(3 + -1c) * 5 = -20

Reorder the terms for easier multiplication:
5(3 + -1c) = -20
(3 * 5 + -1c * 5) = -20
(15 + -5c) = -20

Solving
15 + -5c = -20

Solving for variable 'c'.

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

Add '-15' to each side of the equation.
15 + -15 + -5c = -20 + -15

Combine like terms: 15 + -15 = 0
0 + -5c = -20 + -15
-5c = -20 + -15

Combine like terms: -20 + -15 = -35
-5c = -35

Divide each side by '-5'.
c = 7

Simplifying
c = 7

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