-15=2r-1

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Solution for -15=2r-1 equation:


Simplifying
-15 = 2r + -1

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

Solving
-15 = -1 + 2r

Solving for variable 'r'.

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

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

Combine like terms: 2r + -2r = 0
-15 + -2r = -1 + 0
-15 + -2r = -1

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

Combine like terms: -15 + 15 = 0
0 + -2r = -1 + 15
-2r = -1 + 15

Combine like terms: -1 + 15 = 14
-2r = 14

Divide each side by '-2'.
r = -7

Simplifying
r = -7

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