-3(r+3)=18

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Solution for -3(r+3)=18 equation: 


Simplifying
-3(r + 3) = 18

Reorder the terms:
-3(3 + r) = 18
(3 * -3 + r * -3) = 18
(-9 + -3r) = 18

Solving
-9 + -3r = 18

Solving for variable 'r'.

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

Add '9' to each side of the equation.
-9 + 9 + -3r = 18 + 9

Combine like terms: -9 + 9 = 0
0 + -3r = 18 + 9
-3r = 18 + 9

Combine like terms: 18 + 9 = 27
-3r = 27

Divide each side by '-3'.
r = -9

Simplifying
r = -9

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