2(2r+4)-9=

Solution for 2(2r+4)-9= equation:

Simplifying
2(2r + 4) + -9 = 0

Reorder the terms:
2(4 + 2r) + -9 = 0
(4 * 2 + 2r * 2) + -9 = 0
(8 + 4r) + -9 = 0

Reorder the terms:
8 + -9 + 4r = 0

Combine like terms: 8 + -9 = -1
-1 + 4r = 0

Solving
-1 + 4r = 0

Solving for variable 'r'.

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

Add '1' to each side of the equation.
-1 + 1 + 4r = 0 + 1

Combine like terms: -1 + 1 = 0
0 + 4r = 0 + 1
4r = 0 + 1

Combine like terms: 0 + 1 = 1
4r = 1

Divide each side by '4'.
r = 0.25

Simplifying
r = 0.25