-1(a-2b)-(3a+6b)=

Solution for -1(a-2b)-(3a+6b)= equation:

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

Reorder the terms:
-1a + -3a + 2b + -6b = 0

Combine like terms: -1a + -3a = -4a
-4a + 2b + -6b = 0

Combine like terms: 2b + -6b = -4b
-4a + -4b = 0

Solving
-4a + -4b = 0

Solving for variable 'a'.

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

Add '4b' to each side of the equation.
-4a + -4b + 4b = 0 + 4b

Combine like terms: -4b + 4b = 0
-4a + 0 = 0 + 4b
-4a = 0 + 4b
Remove the zero:
-4a = 4b

Divide each side by '-4'.
a = -1b

Simplifying
a = -1b