-2r-5=13

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Solution for -2r-5=13 equation: 


Simplifying
-2r + -5 = 13

Reorder the terms:
-5 + -2r = 13

Solving
-5 + -2r = 13

Solving for variable 'r'.

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

Add '5' to each side of the equation.
-5 + 5 + -2r = 13 + 5

Combine like terms: -5 + 5 = 0
0 + -2r = 13 + 5
-2r = 13 + 5

Combine like terms: 13 + 5 = 18
-2r = 18

Divide each side by '-2'.
r = -9

Simplifying
r = -9

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