\
The expression is
.
Subtraction property of equality:
\If x + a = b, then x + a - a = b - a, or x = b - a.
\
(Subtract 5 from each side)
(Additive inverse property:
) \ \
\
(Subtract:
)
Check:
\Check the solution by substituting
in the original equation.

(Add: 3 + 5 = 8)
The value of 