-2(3-r)=12

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Solution for -2(3-r)=12 equation: 


Simplifying
-2(3 + -1r) = 12
(3 * -2 + -1r * -2) = 12
(-6 + 2r) = 12

Solving
-6 + 2r = 12

Solving for variable 'r'.

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

Add '6' to each side of the equation.
-6 + 6 + 2r = 12 + 6

Combine like terms: -6 + 6 = 0
0 + 2r = 12 + 6
2r = 12 + 6

Combine like terms: 12 + 6 = 18
2r = 18

Divide each side by '2'.
r = 9

Simplifying
r = 9

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