7(c-9)=-21

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Solution for 7(c-9)=-21 equation: 


Simplifying
7(c + -9) = -21

Reorder the terms:
7(-9 + c) = -21
(-9 * 7 + c * 7) = -21
(-63 + 7c) = -21

Solving
-63 + 7c = -21

Solving for variable 'c'.

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

Add '63' to each side of the equation.
-63 + 63 + 7c = -21 + 63

Combine like terms: -63 + 63 = 0
0 + 7c = -21 + 63
7c = -21 + 63

Combine like terms: -21 + 63 = 42
7c = 42

Divide each side by '7'.
c = 6

Simplifying
c = 6

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