-3(4-5c)=12c+9

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Solution for -3(4-5c)=12c+9 equation:


Simplifying
-3(4 + -5c) = 12c + 9
(4 * -3 + -5c * -3) = 12c + 9
(-12 + 15c) = 12c + 9

Reorder the terms:
-12 + 15c = 9 + 12c

Solving
-12 + 15c = 9 + 12c

Solving for variable 'c'.

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

Add '-12c' to each side of the equation.
-12 + 15c + -12c = 9 + 12c + -12c

Combine like terms: 15c + -12c = 3c
-12 + 3c = 9 + 12c + -12c

Combine like terms: 12c + -12c = 0
-12 + 3c = 9 + 0
-12 + 3c = 9

Add '12' to each side of the equation.
-12 + 12 + 3c = 9 + 12

Combine like terms: -12 + 12 = 0
0 + 3c = 9 + 12
3c = 9 + 12

Combine like terms: 9 + 12 = 21
3c = 21

Divide each side by '3'.
c = 7

Simplifying
c = 7

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