The equation is
(Distributive property: , a (b + c) = ab + ac)
(Multiply:
)
(Commutative property: a+b = b+a)
(Subtract:
)
(Subtract 6f from each side)
(Commutative property: a+b = b+a)
(Additive inverse property:
) \ \
(Additive identity property:
)
All real numbers are solutions because is true.
The equality solution is .