3a-(b-a)=0

Solution for 3a-(b-a)=0 equation:

Simplifying
3a + -1(b + -1a) = 0

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

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

Solving
4a + -1b = 0

Solving for variable 'a'.

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

Add 'b' to each side of the equation.
4a + -1b + b = 0 + b

Combine like terms: -1b + b = 0
4a + 0 = 0 + b
4a = 0 + b
Remove the zero:
4a = b

Divide each side by '4'.
a = 0.25b

Simplifying
a = 0.25b