A shoe company is going to close one of its two stores and combine all the inventory from both stores. These polynomials represent the inventory in each store:
Store A:
500+
NE
Store B: 392–39+
What is the combined inventory of the two stores?

step-by-step explanation:

step 1: solve one of the equations for one of the variables. let's solve the first equation for y:

step 2: substitute that equation into the other equation, and solve for x.

step 3: substitute x = 4 x = 4 x=4 into one of the original equations, and solve for y.