Write a system of equations to describe the situation below, solve using substitution, and fill
in the blanks.
Amy works in the shipping department of a toy manufacturer. Toy cars weigh 3 kilograms
apiece and are shipped in a container that weighs 1 kilogram when empty. Toy trucks, which
weigh 1 kilogram apiece, are shipped in a container weighing 7 kilograms. When packed with
toys and ready for shipment, both kinds of containers have the same number of toys and the
same weight. What is the number of toys? What is the weight of each container?

Please I need help