The equation is
.
Case 1: If a = b,Then
\
Case 2: If a =
b, Then

Solve equation for case 1.
\
Apply addition property of equality: Add 3 to each side.
\
(Apply additive inverse property:
)
(Add:
)
Apply division property of equality: Divide each side by 5.
\
(Cancel common terms)
(Divide:
)
Solve equation for case 2.
\
Apply addition property of equality: Add 3 to each side.
\
(Apply additive inverse property:
)
(Add:
)
Apply division property of equality: Divide each side by 5.
\
(Cancel common terms)
(Divide:
)
Graph the solution on a number line.
The equality solution set is {3 or
1.8}.