12r+13=-3r

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Solution for 12r+13=-3r equation:


Simplifying
12r + 13 = -3r

Reorder the terms:
13 + 12r = -3r

Solving
13 + 12r = -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.
13 + 12r + 3r = -3r + 3r

Combine like terms: 12r + 3r = 15r
13 + 15r = -3r + 3r

Combine like terms: -3r + 3r = 0
13 + 15r = 0

Add '-13' to each side of the equation.
13 + -13 + 15r = 0 + -13

Combine like terms: 13 + -13 = 0
0 + 15r = 0 + -13
15r = 0 + -13

Combine like terms: 0 + -13 = -13
15r = -13

Divide each side by '15'.
r = -0.8666666667

Simplifying
r = -0.8666666667

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