2(r+5)=9

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Solution for 2(r+5)=9 equation: 


Simplifying
2(r + 5) = 9

Reorder the terms:
2(5 + r) = 9
(5 * 2 + r * 2) = 9
(10 + 2r) = 9

Solving
10 + 2r = 9

Solving for variable 'r'.

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

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

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

Combine like terms: 9 + -10 = -1
2r = -1

Divide each side by '2'.
r = -0.5

Simplifying
r = -0.5

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