A national restaurant chain has 2.1 times 10^5 managers. Each manager makes 39,000 per year. How much does the restaurant chain spend on managers each year?

Step-by-step explanation:

On the left-hand side of the equation, both terms have a common factor of , so we can pull that out:

We can now create two equations from this to solve for :

The first equation doesn't need any further work, but the second equation can be reduced by substracting from both sides to get by itself on the left-hand side:

Therefore, the two solutions to the problem are