-3(4r-8)=-30

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Solution for -3(4r-8)=-30 equation: 


Simplifying
-3(4r + -8) = -30

Reorder the terms:
-3(-8 + 4r) = -30
(-8 * -3 + 4r * -3) = -30
(24 + -12r) = -30

Solving
24 + -12r = -30

Solving for variable 'r'.

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

Add '-24' to each side of the equation.
24 + -24 + -12r = -30 + -24

Combine like terms: 24 + -24 = 0
0 + -12r = -30 + -24
-12r = -30 + -24

Combine like terms: -30 + -24 = -54
-12r = -54

Divide each side by '-12'.
r = 4.5

Simplifying
r = 4.5

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