-3(5-r)=6

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Solution for -3(5-r)=6 equation: 


Simplifying
-3(5 + -1r) = 6
(5 * -3 + -1r * -3) = 6
(-15 + 3r) = 6

Solving
-15 + 3r = 6

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 = 6 + 15

Combine like terms: -15 + 15 = 0
0 + 3r = 6 + 15
3r = 6 + 15

Combine like terms: 6 + 15 = 21
3r = 21

Divide each side by '3'.
r = 7

Simplifying
r = 7

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