-3(4r+5)=-99

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Solution for -3(4r+5)=-99 equation:


Simplifying
-3(4r + 5) = -99

Reorder the terms:
-3(5 + 4r) = -99
(5 * -3 + 4r * -3) = -99
(-15 + -12r) = -99

Solving
-15 + -12r = -99

Solving for variable 'r'.

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

Add '15' to each side of the equation.
-15 + 15 + -12r = -99 + 15

Combine like terms: -15 + 15 = 0
0 + -12r = -99 + 15
-12r = -99 + 15

Combine like terms: -99 + 15 = -84
-12r = -84

Divide each side by '-12'.
r = 7

Simplifying
r = 7

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