9(-3r+1)=144

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Solution for 9(-3r+1)=144 equation: 


Simplifying
9(-3r + 1) = 144

Reorder the terms:
9(1 + -3r) = 144
(1 * 9 + -3r * 9) = 144
(9 + -27r) = 144

Solving
9 + -27r = 144

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 + -27r = 144 + -9

Combine like terms: 9 + -9 = 0
0 + -27r = 144 + -9
-27r = 144 + -9

Combine like terms: 144 + -9 = 135
-27r = 135

Divide each side by '-27'.
r = -5

Simplifying
r = -5

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