3(2c-3)=21

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Solution for 3(2c-3)=21 equation: 


Simplifying
3(2c + -3) = 21

Reorder the terms:
3(-3 + 2c) = 21
(-3 * 3 + 2c * 3) = 21
(-9 + 6c) = 21

Solving
-9 + 6c = 21

Solving for variable 'c'.

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

Add '9' to each side of the equation.
-9 + 9 + 6c = 21 + 9

Combine like terms: -9 + 9 = 0
0 + 6c = 21 + 9
6c = 21 + 9

Combine like terms: 21 + 9 = 30
6c = 30

Divide each side by '6'.
c = 5

Simplifying
c = 5

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