-6(3r+6)=-90

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Solution for -6(3r+6)=-90 equation: 


Simplifying
-6(3r + 6) = -90

Reorder the terms:
-6(6 + 3r) = -90
(6 * -6 + 3r * -6) = -90
(-36 + -18r) = -90

Solving
-36 + -18r = -90

Solving for variable 'r'.

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

Add '36' to each side of the equation.
-36 + 36 + -18r = -90 + 36

Combine like terms: -36 + 36 = 0
0 + -18r = -90 + 36
-18r = -90 + 36

Combine like terms: -90 + 36 = -54
-18r = -54

Divide each side by '-18'.
r = 3

Simplifying
r = 3

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