8(c-9)=-21

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Solution for 8(c-9)=-21 equation:


Simplifying
8(c + -9) = -21

Reorder the terms:
8(-9 + c) = -21
(-9 * 8 + c * 8) = -21
(-72 + 8c) = -21

Solving
-72 + 8c = -21

Solving for variable 'c'.

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

Add '72' to each side of the equation.
-72 + 72 + 8c = -21 + 72

Combine like terms: -72 + 72 = 0
0 + 8c = -21 + 72
8c = -21 + 72

Combine like terms: -21 + 72 = 51
8c = 51

Divide each side by '8'.
c = 6.375

Simplifying
c = 6.375

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