-2(a-b)=a+c

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

Simplifying
-2(a + -1b) = a + c
(a * -2 + -1b * -2) = a + c
(-2a + 2b) = a + c

Solving
-2a + 2b = a + c

Solving for variable 'a'.

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

Add '-1a' to each side of the equation.
-2a + -1a + 2b = a + -1a + c

Combine like terms: -2a + -1a = -3a
-3a + 2b = a + -1a + c

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

Add '-2b' to each side of the equation.
-3a + 2b + -2b = -2b + c

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

Divide each side by '-3'.
a = 0.6666666667b + -0.3333333333c

Simplifying
a = 0.6666666667b + -0.3333333333c