2(r+9)=28

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Solution for 2(r+9)=28 equation:


Simplifying
2(r + 9) = 28

Reorder the terms:
2(9 + r) = 28
(9 * 2 + r * 2) = 28
(18 + 2r) = 28

Solving
18 + 2r = 28

Solving for variable 'r'.

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

Add '-18' to each side of the equation.
18 + -18 + 2r = 28 + -18

Combine like terms: 18 + -18 = 0
0 + 2r = 28 + -18
2r = 28 + -18

Combine like terms: 28 + -18 = 10
2r = 10

Divide each side by '2'.
r = 5

Simplifying
r = 5

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