-1=2r

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Solution for -1=2r equation:


Simplifying
-1 = 2r

Solving
-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.
-1 + -2r = 2r + -2r

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

Add '1' to each side of the equation.
-1 + 1 + -2r = 0 + 1

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

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

Divide each side by '-2'.
r = -0.5

Simplifying
r = -0.5

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