-3(-7+8r)=

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Solution for -3(-7+8r)= equation: 


Simplifying
-3(-7 + 8r) = 0
(-7 * -3 + 8r * -3) = 0
(21 + -24r) = 0

Solving
21 + -24r = 0

Solving for variable 'r'.

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

Add '-21' to each side of the equation.
21 + -21 + -24r = 0 + -21

Combine like terms: 21 + -21 = 0
0 + -24r = 0 + -21
-24r = 0 + -21

Combine like terms: 0 + -21 = -21
-24r = -21

Divide each side by '-24'.
r = 0.875

Simplifying
r = 0.875

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