Respuesta :

Step 1: Flip the equation.
1
2
a
b
+
1
2
a
c
=
5
Step 2: Factor out variable a.
a
(
b
+
c
2
)
=
5
Step 3: Divide both sides by (b+c)/2.
a
(
b
+
c
2
)
b
+
c
2
=
5
b
+
c
2
a
=
10
b
+
c