-1=2r-7

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Solution for -1=2r-7 equation:


Simplifying
-1 = 2r + -7

Reorder the terms:
-1 = -7 + 2r

Solving
-1 = -7 + 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 = -7 + 2r + -2r

Combine like terms: 2r + -2r = 0
-1 + -2r = -7 + 0
-1 + -2r = -7

Add '1' to each side of the equation.
-1 + 1 + -2r = -7 + 1

Combine like terms: -1 + 1 = 0
0 + -2r = -7 + 1
-2r = -7 + 1

Combine like terms: -7 + 1 = -6
-2r = -6

Divide each side by '-2'.
r = 3

Simplifying
r = 3

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