2r-8-r=-7

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Solution for 2r-8-r=-7 equation: 


Simplifying
2r + -8 + -1r = -7

Reorder the terms:
-8 + 2r + -1r = -7

Combine like terms: 2r + -1r = 1r
-8 + 1r = -7

Solving
-8 + 1r = -7

Solving for variable 'r'.

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

Add '8' to each side of the equation.
-8 + 8 + 1r = -7 + 8

Combine like terms: -8 + 8 = 0
0 + 1r = -7 + 8
1r = -7 + 8

Combine like terms: -7 + 8 = 1
1r = 1

Divide each side by '1'.
r = 1

Simplifying
r = 1

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