3=-12+15r

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Solution for 3=-12+15r equation:


Simplifying
3 = -12 + 15r

Solving
3 = -12 + 15r

Solving for variable 'r'.

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

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

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

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

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

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

Divide each side by '-15'.
r = 1

Simplifying
r = 1

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