12=3(c-1)

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Solution for 12=3(c-1) equation:


Simplifying
12 = 3(c + -1)

Reorder the terms:
12 = 3(-1 + c)
12 = (-1 * 3 + c * 3)
12 = (-3 + 3c)

Solving
12 = -3 + 3c

Solving for variable 'c'.

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

Add '-3c' to each side of the equation.
12 + -3c = -3 + 3c + -3c

Combine like terms: 3c + -3c = 0
12 + -3c = -3 + 0
12 + -3c = -3

Add '-12' to each side of the equation.
12 + -12 + -3c = -3 + -12

Combine like terms: 12 + -12 = 0
0 + -3c = -3 + -12
-3c = -3 + -12

Combine like terms: -3 + -12 = -15
-3c = -15

Divide each side by '-3'.
c = 5

Simplifying
c = 5

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