2r+8-1r=-7

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Solution for 2r+8-1r=-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 = -15
1r = -15

Divide each side by '1'.
r = -15

Simplifying
r = -15

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