-3(5-4r)=

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


Simplifying
-3(5 + -4r) = 0
(5 * -3 + -4r * -3) = 0
(-15 + 12r) = 0

Solving
-15 + 12r = 0

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 = 0 + 15

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

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

Divide each side by '12'.
r = 1.25

Simplifying
r = 1.25

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