12r-100=230+4r

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Solution for 12r-100=230+4r equation:


Simplifying
12r + -100 = 230 + 4r

Reorder the terms:
-100 + 12r = 230 + 4r

Solving
-100 + 12r = 230 + 4r

Solving for variable 'r'.

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

Add '-4r' to each side of the equation.
-100 + 12r + -4r = 230 + 4r + -4r

Combine like terms: 12r + -4r = 8r
-100 + 8r = 230 + 4r + -4r

Combine like terms: 4r + -4r = 0
-100 + 8r = 230 + 0
-100 + 8r = 230

Add '100' to each side of the equation.
-100 + 100 + 8r = 230 + 100

Combine like terms: -100 + 100 = 0
0 + 8r = 230 + 100
8r = 230 + 100

Combine like terms: 230 + 100 = 330
8r = 330

Divide each side by '8'.
r = 41.25

Simplifying
r = 41.25

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