The equation is .
\
Apply addition property of equality: Add 2y to each side.
\ (Apply additive inverse property:
)
(Apply additive identity property:
)
Apply subtration property of equality: Subtract 10 from each side.
\Rearrange the terms using commutative property of addition: a+b = b+a. \ \
(Apply additive inverse property:
)
(Apply additive identity property:
)
According to division property of equality: then
.
(Divide each side by 2)
(Cancel common terms)
(Divide:
)
(Substitute x = – 6)
(Multiply:
)
(Divide:
)
(Subtract:
)
The value of .