-15=-12+3r

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Solution for -15=-12+3r equation:


Simplifying
-15 = -12 + 3r

Solving
-15 = -12 + 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.
-15 + -3r = -12 + 3r + -3r

Combine like terms: 3r + -3r = 0
-15 + -3r = -12 + 0
-15 + -3r = -12

Add '15' to each side of the equation.
-15 + 15 + -3r = -12 + 15

Combine like terms: -15 + 15 = 0
0 + -3r = -12 + 15
-3r = -12 + 15

Combine like terms: -12 + 15 = 3
-3r = 3

Divide each side by '-3'.
r = -1

Simplifying
r = -1

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