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

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

Simplifying
-3(a + 3b) + 2(2b + -1a) = 0
(a * -3 + 3b * -3) + 2(2b + -1a) = 0
(-3a + -9b) + 2(2b + -1a) = 0

Reorder the terms:
-3a + -9b + 2(-1a + 2b) = 0
-3a + -9b + (-1a * 2 + 2b * 2) = 0
-3a + -9b + (-2a + 4b) = 0

Reorder the terms:
-3a + -2a + -9b + 4b = 0

Combine like terms: -3a + -2a = -5a
-5a + -9b + 4b = 0

Combine like terms: -9b + 4b = -5b
-5a + -5b = 0

Solving
-5a + -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.
-5a + -5b + 5b = 0 + 5b

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

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

Simplifying
a = -1b