17=9+2r

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Solution for 17=9+2r equation:


Simplifying
17 = 9 + 2r

Solving
17 = 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.
17 + -2r = 9 + 2r + -2r

Combine like terms: 2r + -2r = 0
17 + -2r = 9 + 0
17 + -2r = 9

Add '-17' to each side of the equation.
17 + -17 + -2r = 9 + -17

Combine like terms: 17 + -17 = 0
0 + -2r = 9 + -17
-2r = 9 + -17

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

Divide each side by '-2'.
r = 4

Simplifying
r = 4

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