2x + 1 - 4 = -2x - 3
We're simply just trying to get "x" by itself :)
So, we have to add 2x to both sides.
2x + 2x + 1 - 4 = -3
Add like terms.
(2x + 2x) + (1 - 4) = -3
Simplify.
4x - 3 = -3
Then, we must add 3 to both sides.
4x = -3 + 3
Simplify.
4x = 0
Divide both sides by 4.
x = 0 ÷ 4
Simplify.
x = 0
~Hope I helped!~
