1 Factor out the common term
a
a.
b
=
a
(
3
+
5
c
)
b=a(3+5c)
2 Divide both sides by
a
a.
b
a
=
3
+
5
c
a
b
=3+5c
3 Subtract
3
3 from both sides.
b
a
−
3
=
5
c
a
b
−3=5c
4 Divide both sides by
5
5.
b
a
−
3
5
=
c
5
a
b
−3
=c
5 Simplify
b
a
−
3
5
5
a
b
−3
to
b
a
5
−
3
5
5
a
b
−
5
3
.
b
a
5
−
3
5
=
c
5
a
b
−
5
3
=c
6 Simplify
b
a
5
5
a
b
to
b
5
a
5a
b
.
b
5
a
−
3
5
=
c
5a
b
−
5
3
=c
7 Switch sides.
c
=
b
5
a
−
3
5
c=
5a
b
−
5
3