\ \
The equation is
According to subtraction property of equality: If a = b then a – c = b – c.
\ (Subtract 25 from each side)
(Additive inverse property:
)
(Add:
)
(Multiply each side by 4)
(Cancel common terms)
\ \
According to division property of equality: If a = b then
(Divide each side by 5)
(Cancel common terms)
\
(Cancel common terms)
\
(Multiply:
)
\ \
Verify:
\To check the solution, substitute in original equation.
(Cancel common terms)
(Multiply:
)
(Subtract:
)
Compare the values, the equation is true. The solution is.
\ \
The solution is .