-3(9+5c)=-21

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Solution for -3(9+5c)=-21 equation: 


Simplifying
-3(9 + 5c) = -21
(9 * -3 + 5c * -3) = -21
(-27 + -15c) = -21

Solving
-27 + -15c = -21

Solving for variable 'c'.

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

Add '27' to each side of the equation.
-27 + 27 + -15c = -21 + 27

Combine like terms: -27 + 27 = 0
0 + -15c = -21 + 27
-15c = -21 + 27

Combine like terms: -21 + 27 = 6
-15c = 6

Divide each side by '-15'.
c = -0.4

Simplifying
c = -0.4

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