-(-2-r)+2(-4-3)=3

Solution for -(-2-r)+2(-4-3)=3 equation:

Simplifying
-1(-2 + -1r) + 2(-4 + -3) = 3
(-2 * -1 + -1r * -1) + 2(-4 + -3) = 3
(2 + 1r) + 2(-4 + -3) = 3

Combine like terms: -4 + -3 = -7
2 + 1r + 2(-7) = 3

Multiply 2 * -7
2 + 1r + -14 = 3

Reorder the terms:
2 + -14 + 1r = 3

Combine like terms: 2 + -14 = -12
-12 + 1r = 3

Solving
-12 + 1r = 3

Solving for variable 'r'.

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

Add '12' to each side of the equation.
-12 + 12 + 1r = 3 + 12

Combine like terms: -12 + 12 = 0
0 + 1r = 3 + 12
1r = 3 + 12

Combine like terms: 3 + 12 = 15
1r = 15

Divide each side by '1'.
r = 15

Simplifying
r = 15