-(r+1)=8

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Solution for -(r+1)=8 equation: 


Simplifying
-1(r + 1) = 8

Reorder the terms:
-1(1 + r) = 8
(1 * -1 + r * -1) = 8
(-1 + -1r) = 8

Solving
-1 + -1r = 8

Solving for variable 'r'.

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

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

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

Combine like terms: 8 + 1 = 9
-1r = 9

Divide each side by '-1'.
r = -9

Simplifying
r = -9

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