2r+15=-r

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Solution for 2r+15=-r equation:


Simplifying
2r + 15 = -1r

Reorder the terms:
15 + 2r = -1r

Solving
15 + 2r = -1r

Solving for variable 'r'.

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

Add 'r' to each side of the equation.
15 + 2r + r = -1r + r

Combine like terms: 2r + r = 3r
15 + 3r = -1r + r

Combine like terms: -1r + r = 0
15 + 3r = 0

Add '-15' to each side of the equation.
15 + -15 + 3r = 0 + -15

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

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

Divide each side by '3'.
r = -5

Simplifying
r = -5

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