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

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

Simplifying
-1(a + -1b) + 2(a + -3b) = 0
(a * -1 + -1b * -1) + 2(a + -3b) = 0
(-1a + 1b) + 2(a + -3b) = 0
-1a + 1b + (a * 2 + -3b * 2) = 0
-1a + 1b + (2a + -6b) = 0

Reorder the terms:
-1a + 2a + 1b + -6b = 0

Combine like terms: -1a + 2a = 1a
1a + 1b + -6b = 0

Combine like terms: 1b + -6b = -5b
1a + -5b = 0

Solving
1a + -5b = 0

Solving for variable 'a'.

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

Add '5b' to each side of the equation.
1a + -5b + 5b = 0 + 5b

Combine like terms: -5b + 5b = 0
1a + 0 = 0 + 5b
1a = 0 + 5b
Remove the zero:
1a = 5b

Divide each side by '1'.
a = 5b

Simplifying
a = 5b