7c-12=-21

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Solution for 7c-12=-21 equation:


Simplifying
7c + -12 = -21

Reorder the terms:
-12 + 7c = -21

Solving
-12 + 7c = -21

Solving for variable 'c'.

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

Add '12' to each side of the equation.
-12 + 12 + 7c = -21 + 12

Combine like terms: -12 + 12 = 0
0 + 7c = -21 + 12
7c = -21 + 12

Combine like terms: -21 + 12 = -9
7c = -9

Divide each side by '7'.
c = -1.285714286

Simplifying
c = -1.285714286

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