4c-21=8c-69

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Solution for 4c-21=8c-69 equation:


Simplifying
4c + -21 = 8c + -69

Reorder the terms:
-21 + 4c = 8c + -69

Reorder the terms:
-21 + 4c = -69 + 8c

Solving
-21 + 4c = -69 + 8c

Solving for variable 'c'.

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

Add '-8c' to each side of the equation.
-21 + 4c + -8c = -69 + 8c + -8c

Combine like terms: 4c + -8c = -4c
-21 + -4c = -69 + 8c + -8c

Combine like terms: 8c + -8c = 0
-21 + -4c = -69 + 0
-21 + -4c = -69

Add '21' to each side of the equation.
-21 + 21 + -4c = -69 + 21

Combine like terms: -21 + 21 = 0
0 + -4c = -69 + 21
-4c = -69 + 21

Combine like terms: -69 + 21 = -48
-4c = -48

Divide each side by '-4'.
c = 12

Simplifying
c = 12

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