3(13-2r)=15

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Solution for 3(13-2r)=15 equation: 


Simplifying
3(13 + -2r) = 15
(13 * 3 + -2r * 3) = 15
(39 + -6r) = 15

Solving
39 + -6r = 15

Solving for variable 'r'.

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

Add '-39' to each side of the equation.
39 + -39 + -6r = 15 + -39

Combine like terms: 39 + -39 = 0
0 + -6r = 15 + -39
-6r = 15 + -39

Combine like terms: 15 + -39 = -24
-6r = -24

Divide each side by '-6'.
r = 4

Simplifying
r = 4

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