2-8r=2r+9

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Solution for 2-8r=2r+9 equation:


Simplifying
2 + -8r = 2r + 9

Reorder the terms:
2 + -8r = 9 + 2r

Solving
2 + -8r = 9 + 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.
2 + -8r + -2r = 9 + 2r + -2r

Combine like terms: -8r + -2r = -10r
2 + -10r = 9 + 2r + -2r

Combine like terms: 2r + -2r = 0
2 + -10r = 9 + 0
2 + -10r = 9

Add '-2' to each side of the equation.
2 + -2 + -10r = 9 + -2

Combine like terms: 2 + -2 = 0
0 + -10r = 9 + -2
-10r = 9 + -2

Combine like terms: 9 + -2 = 7
-10r = 7

Divide each side by '-10'.
r = -0.7

Simplifying
r = -0.7

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