Answer and explanation:
Simplify by combining like terms:
(-3x + 4x) + 2
x + 2
So, x + 2 is the simplified version of this expression, but perhaps you meant make this an equation by adding a y to the other side, since this isn't currently a linear equation.
If the equation were:
y = -3x + (2 + 4x)
then it would be this in standard form:
y = x + 2
-x + y = 2