The equation is
Subtraction property of equality: if , then
\ \
(Subtract 2 from each side)
(Additive inverse property:
)
(Additive inverse property:
)
(Subtract:
)
(Multiply each side by 5)
(Cancel common terms)
(Multiply:
)
Check:
\To check the solution, substitute in equation
.
(Divide:
)
(Add:
)
The equation is true.
\ The value of .