1. Subtract
4
x
4x from both sides.
13
=
5
x
−
15
−
4
x
13=5x−15−4x
2. Simplify
5
x
−
15
−
4
x
5x−15−4x to
x
−
15
x−15.
13
=
x
−
15
13=x−15
3. Add
15
15 to both sides.
13
+
15
=
x
13+15=x
4. Simplify
13
+
15
13+15 to
28
28.
28
=
x
28=x
5.Switch sides.
x
=
28
x=28
