12c-28=9c-7

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Solution for 12c-28=9c-7 equation:


Simplifying
12c + -28 = 9c + -7

Reorder the terms:
-28 + 12c = 9c + -7

Reorder the terms:
-28 + 12c = -7 + 9c

Solving
-28 + 12c = -7 + 9c

Solving for variable 'c'.

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

Add '-9c' to each side of the equation.
-28 + 12c + -9c = -7 + 9c + -9c

Combine like terms: 12c + -9c = 3c
-28 + 3c = -7 + 9c + -9c

Combine like terms: 9c + -9c = 0
-28 + 3c = -7 + 0
-28 + 3c = -7

Add '28' to each side of the equation.
-28 + 28 + 3c = -7 + 28

Combine like terms: -28 + 28 = 0
0 + 3c = -7 + 28
3c = -7 + 28

Combine like terms: -7 + 28 = 21
3c = 21

Divide each side by '3'.
c = 7

Simplifying
c = 7

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