-3(5+r)=6

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


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