3(5r+9)-28=

Solution for 3(5r+9)-28= equation:

Simplifying
3(5r + 9) + -28 = 0

Reorder the terms:
3(9 + 5r) + -28 = 0
(9 * 3 + 5r * 3) + -28 = 0
(27 + 15r) + -28 = 0

Reorder the terms:
27 + -28 + 15r = 0

Combine like terms: 27 + -28 = -1
-1 + 15r = 0

Solving
-1 + 15r = 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 + 15r = 0 + 1

Combine like terms: -1 + 1 = 0
0 + 15r = 0 + 1
15r = 0 + 1

Combine like terms: 0 + 1 = 1
15r = 1

Divide each side by '15'.
r = 0.06666666667

Simplifying
r = 0.06666666667