(2a+4)-(1a+3)=

Solution for (2a+4)-(1a+3)= equation:

Simplifying
(2a + 4) + -1(1a + 3) = 0

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

Remove parenthesis around (4 + 2a)
4 + 2a + -1(1a + 3) = 0

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

Reorder the terms:
4 + -3 + 2a + -1a = 0

Combine like terms: 4 + -3 = 1
1 + 2a + -1a = 0

Combine like terms: 2a + -1a = 1a
1 + 1a = 0

Solving
1 + 1a = 0

Solving for variable 'a'.

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

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

Combine like terms: 1 + -1 = 0
0 + 1a = 0 + -1
1a = 0 + -1

Combine like terms: 0 + -1 = -1
1a = -1

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

Simplifying
a = -1