
The equation is
.
Apply subtraction property of equality: Subtract 8 from each side.
\
(Subtract: 8 – 8 = 0)
(Subtract: – 7 – 8 = – 15)
Verify:
\To check the solution, substitute
in original equation.

(Subtract:
)
Compare the values, the equation is true. The solution is
.
The solution is
.