-(3a-2b)-3(-a-b)=n

Solution for -(3a-2b)-3(-a-b)=n equation:

Simplifying
-1(3a + -2b) + -3(-1a + -1b) = n
(3a * -1 + -2b * -1) + -3(-1a + -1b) = n
(-3a + 2b) + -3(-1a + -1b) = n
-3a + 2b + (-1a * -3 + -1b * -3) = n
-3a + 2b + (3a + 3b) = n

Reorder the terms:
-3a + 3a + 2b + 3b = n

Combine like terms: -3a + 3a = 0
0 + 2b + 3b = n
2b + 3b = n

Combine like terms: 2b + 3b = 5b
5b = n

Solving
5b = n

Solving for variable 'b'.

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

Divide each side by '5'.
b = 0.2n

Simplifying
b = 0.2n