How could you find the total number of free seats in an event if you have an equation that represents the total number of attendants?
See solution.
Practice makes perfect
We can add or subtract equations to represent a new equation. For example, let's consider an equation T that represents the total number of attendants to a concert, and let S be the equation that represents the total number of seats. Next, let's subtract them.
T - S
⇕
Total attendants - Total seats
The equation T- S represents the total number of free seats. Keep in mind that this is just a sample situation, and your answer may vary.
Extra
A Different Example
Let P_1 and P_2 the total number of points scored by two basketball teams when playing against each other, respectively. If we want to know the total number of points scored in that game, we add these two equations.
Total points scored = P_1 + P_2
