Question

The twelve students in Mateo's computer programming class are using the computer lab. Some computers are shared by pairs of students, and 4 students work alone. Which equation could you use to determine how many computers are shared in the computer lab? Let c be the number of shared computers.

the quantity c over two all plus four equals twelve

the quantity c over two all minus four equals twelve

two times c plus four equals twelve

two times c minus four equals twelve