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

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

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

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

Combine like terms: 6a + -1a = 5a
5a + 2b + 2b = 0

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

Solving
5a + 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.
5a + 4b + -4b = 0 + -4b

Combine like terms: 4b + -4b = 0
5a + 0 = 0 + -4b
5a = 0 + -4b
Remove the zero:
5a = -4b

Divide each side by '5'.
a = -0.8b

Simplifying
a = -0.8b