12r=3r+45

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Solution for 12r=3r+45 equation: 


Simplifying
12r = 3r + 45

Reorder the terms:
12r = 45 + 3r

Solving
12r = 45 + 3r

Solving for variable 'r'.

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

Add '-3r' to each side of the equation.
12r + -3r = 45 + 3r + -3r

Combine like terms: 12r + -3r = 9r
9r = 45 + 3r + -3r

Combine like terms: 3r + -3r = 0
9r = 45 + 0
9r = 45

Divide each side by '9'.
r = 5

Simplifying
r = 5

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