7(3r-3)-3r=-165

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Solution for 7(3r-3)-3r=-165 equation: 


Simplifying
7(3r + -3) + -3r = -165

Reorder the terms:
7(-3 + 3r) + -3r = -165
(-3 * 7 + 3r * 7) + -3r = -165
(-21 + 21r) + -3r = -165

Combine like terms: 21r + -3r = 18r
-21 + 18r = -165

Solving
-21 + 18r = -165

Solving for variable 'r'.

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

Add '21' to each side of the equation.
-21 + 21 + 18r = -165 + 21

Combine like terms: -21 + 21 = 0
0 + 18r = -165 + 21
18r = -165 + 21

Combine like terms: -165 + 21 = -144
18r = -144

Divide each side by '18'.
r = -8

Simplifying
r = -8

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