9-2r=16

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Solution for 9-2r=16 equation: 


Simplifying
9 + -2r = 16

Solving
9 + -2r = 16

Solving for variable 'r'.

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

Add '-9' to each side of the equation.
9 + -9 + -2r = 16 + -9

Combine like terms: 9 + -9 = 0
0 + -2r = 16 + -9
-2r = 16 + -9

Combine like terms: 16 + -9 = 7
-2r = 7

Divide each side by '-2'.
r = -3.5

Simplifying
r = -3.5

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