-6(3+4r)+3r=-165

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Solution for -6(3+4r)+3r=-165 equation: 


Simplifying
-6(3 + 4r) + 3r = -165
(3 * -6 + 4r * -6) + 3r = -165
(-18 + -24r) + 3r = -165

Combine like terms: -24r + 3r = -21r
-18 + -21r = -165

Solving
-18 + -21r = -165

Solving for variable 'r'.

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

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

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

Combine like terms: -165 + 18 = -147
-21r = -147

Divide each side by '-21'.
r = 7

Simplifying
r = 7

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