18=3c+12-c+4

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Solution for 18=3c+12-c+4 equation:


Simplifying
18 = 3c + 12 + -1c + 4

Reorder the terms:
18 = 12 + 4 + 3c + -1c

Combine like terms: 12 + 4 = 16
18 = 16 + 3c + -1c

Combine like terms: 3c + -1c = 2c
18 = 16 + 2c

Solving
18 = 16 + 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.
18 + -2c = 16 + 2c + -2c

Combine like terms: 2c + -2c = 0
18 + -2c = 16 + 0
18 + -2c = 16

Add '-18' to each side of the equation.
18 + -18 + -2c = 16 + -18

Combine like terms: 18 + -18 = 0
0 + -2c = 16 + -18
-2c = 16 + -18

Combine like terms: 16 + -18 = -2
-2c = -2

Divide each side by '-2'.
c = 1

Simplifying
c = 1

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