7(12-1r)=-84

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Solution for 7(12-1r)=-84 equation: 


Simplifying
7(12 + -1r) = -84
(12 * 7 + -1r * 7) = -84
(84 + -7r) = -84

Solving
84 + -7r = -84

Solving for variable 'r'.

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

Add '-84' to each side of the equation.
84 + -84 + -7r = -84 + -84

Combine like terms: 84 + -84 = 0
0 + -7r = -84 + -84
-7r = -84 + -84

Combine like terms: -84 + -84 = -168
-7r = -168

Divide each side by '-7'.
r = 24

Simplifying
r = 24

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