12=-2+c-4+c

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Solution for 12=-2+c-4+c equation:


Simplifying
12 = -2 + c + -4 + c

Reorder the terms:
12 = -2 + -4 + c + c

Combine like terms: -2 + -4 = -6
12 = -6 + c + c

Combine like terms: c + c = 2c
12 = -6 + 2c

Solving
12 = -6 + 2c

Solving for variable 'c'.

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

Add '-2c' to each side of the equation.
12 + -2c = -6 + 2c + -2c

Combine like terms: 2c + -2c = 0
12 + -2c = -6 + 0
12 + -2c = -6

Add '-12' to each side of the equation.
12 + -12 + -2c = -6 + -12

Combine like terms: 12 + -12 = 0
0 + -2c = -6 + -12
-2c = -6 + -12

Combine like terms: -6 + -12 = -18
-2c = -18

Divide each side by '-2'.
c = 9

Simplifying
c = 9

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