4a-(3-a)=7

Solution for 4a-(3-a)=7 equation:

Simplifying
4a + -1(3 + -1a) = 7
4a + (3 * -1 + -1a * -1) = 7
4a + (-3 + 1a) = 7

Reorder the terms:
-3 + 4a + 1a = 7

Combine like terms: 4a + 1a = 5a
-3 + 5a = 7

Solving
-3 + 5a = 7

Solving for variable 'a'.

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

Add '3' to each side of the equation.
-3 + 3 + 5a = 7 + 3

Combine like terms: -3 + 3 = 0
0 + 5a = 7 + 3
5a = 7 + 3

Combine like terms: 7 + 3 = 10
5a = 10

Divide each side by '5'.
a = 2

Simplifying
a = 2