3(3c-8)=21

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Solution for 3(3c-8)=21 equation: 


Simplifying
3(3c + -8) = 21

Reorder the terms:
3(-8 + 3c) = 21
(-8 * 3 + 3c * 3) = 21
(-24 + 9c) = 21

Solving
-24 + 9c = 21

Solving for variable 'c'.

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

Add '24' to each side of the equation.
-24 + 24 + 9c = 21 + 24

Combine like terms: -24 + 24 = 0
0 + 9c = 21 + 24
9c = 21 + 24

Combine like terms: 21 + 24 = 45
9c = 45

Divide each side by '9'.
c = 5

Simplifying
c = 5

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