8-r=2r-91

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Solution for 8-r=2r-91 equation:


Simplifying
8 + -1r = 2r + -91

Reorder the terms:
8 + -1r = -91 + 2r

Solving
8 + -1r = -91 + 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.
8 + -1r + -2r = -91 + 2r + -2r

Combine like terms: -1r + -2r = -3r
8 + -3r = -91 + 2r + -2r

Combine like terms: 2r + -2r = 0
8 + -3r = -91 + 0
8 + -3r = -91

Add '-8' to each side of the equation.
8 + -8 + -3r = -91 + -8

Combine like terms: 8 + -8 = 0
0 + -3r = -91 + -8
-3r = -91 + -8

Combine like terms: -91 + -8 = -99
-3r = -99

Divide each side by '-3'.
r = 33

Simplifying
r = 33

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