-3(5-r)=12

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Solution for -3(5-r)=12 equation:


Simplifying
-3(5 + -1r) = 12
(5 * -3 + -1r * -3) = 12
(-15 + 3r) = 12

Solving
-15 + 3r = 12

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 + 3r = 12 + 15

Combine like terms: -15 + 15 = 0
0 + 3r = 12 + 15
3r = 12 + 15

Combine like terms: 12 + 15 = 27
3r = 27

Divide each side by '3'.
r = 9

Simplifying
r = 9

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