17=9+2r-8

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Solution for 17=9+2r-8 equation:


Simplifying
17 = 9 + 2r + -8

Reorder the terms:
17 = 9 + -8 + 2r

Combine like terms: 9 + -8 = 1
17 = 1 + 2r

Solving
17 = 1 + 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.
17 + -2r = 1 + 2r + -2r

Combine like terms: 2r + -2r = 0
17 + -2r = 1 + 0
17 + -2r = 1

Add '-17' to each side of the equation.
17 + -17 + -2r = 1 + -17

Combine like terms: 17 + -17 = 0
0 + -2r = 1 + -17
-2r = 1 + -17

Combine like terms: 1 + -17 = -16
-2r = -16

Divide each side by '-2'.
r = 8

Simplifying
r = 8

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