-3(4r-80)=-36

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Solution for -3(4r-80)=-36 equation:


Simplifying
-3(4r + -80) = -36

Reorder the terms:
-3(-80 + 4r) = -36
(-80 * -3 + 4r * -3) = -36
(240 + -12r) = -36

Solving
240 + -12r = -36

Solving for variable 'r'.

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

Add '-240' to each side of the equation.
240 + -240 + -12r = -36 + -240

Combine like terms: 240 + -240 = 0
0 + -12r = -36 + -240
-12r = -36 + -240

Combine like terms: -36 + -240 = -276
-12r = -276

Divide each side by '-12'.
r = 23

Simplifying
r = 23

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