5(12-r)=15

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Solution for 5(12-r)=15 equation: 


Simplifying
5(12 + -1r) = 15
(12 * 5 + -1r * 5) = 15
(60 + -5r) = 15

Solving
60 + -5r = 15

Solving for variable 'r'.

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

Add '-60' to each side of the equation.
60 + -60 + -5r = 15 + -60

Combine like terms: 60 + -60 = 0
0 + -5r = 15 + -60
-5r = 15 + -60

Combine like terms: 15 + -60 = -45
-5r = -45

Divide each side by '-5'.
r = 9

Simplifying
r = 9

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