12-(-3)=c

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


Simplifying
12 + -1(-3) = c

Multiply -1 * -3
12 + 3 = c

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

Solving
15 = 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.
15 + -1c = c + -1c

Combine like terms: c + -1c = 0
15 + -1c = 0

Add '-15' to each side of the equation.
15 + -15 + -1c = 0 + -15

Combine like terms: 15 + -15 = 0
0 + -1c = 0 + -15
-1c = 0 + -15

Combine like terms: 0 + -15 = -15
-1c = -15

Divide each side by '-1'.
c = 15

Simplifying
c = 15

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