21+(c-9)=24

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Solution for 21+(c-9)=24 equation:


Simplifying
21 + (c + -9) = 24

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

Remove parenthesis around (-9 + c)
21 + -9 + c = 24

Combine like terms: 21 + -9 = 12
12 + c = 24

Solving
12 + c = 24

Solving for variable 'c'.

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

Add '-12' to each side of the equation.
12 + -12 + c = 24 + -12

Combine like terms: 12 + -12 = 0
0 + c = 24 + -12
c = 24 + -12

Combine like terms: 24 + -12 = 12
c = 12

Simplifying
c = 12

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