(3+5r)-(2r-5)=

Solution for (3+5r)-(2r-5)= equation:

Simplifying
(3 + 5r) + -1(2r + -5) = 0

Remove parenthesis around (3 + 5r)
3 + 5r + -1(2r + -5) = 0

Reorder the terms:
3 + 5r + -1(-5 + 2r) = 0
3 + 5r + (-5 * -1 + 2r * -1) = 0
3 + 5r + (5 + -2r) = 0

Reorder the terms:
3 + 5 + 5r + -2r = 0

Combine like terms: 3 + 5 = 8
8 + 5r + -2r = 0

Combine like terms: 5r + -2r = 3r
8 + 3r = 0

Solving
8 + 3r = 0

Solving for variable 'r'.

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

Add '-8' to each side of the equation.
8 + -8 + 3r = 0 + -8

Combine like terms: 8 + -8 = 0
0 + 3r = 0 + -8
3r = 0 + -8

Combine like terms: 0 + -8 = -8
3r = -8

Divide each side by '3'.
r = -2.666666667

Simplifying
r = -2.666666667