1. Given 4x +5 = 2x -19
prove x = -12
statement reason
1. 1.
2. 2.
3. 3.
4. 4.

Add or subtract on both sides to get the term in x alone, then divide by the coefficient of x to the value of x.

When it concerns the statements, I don't know which ones you were taught, so I can't help you there...