Question

teachers divides students into groups of 3. each group of 3 wrote a report that had 9 pictures in it. the students used 585 pictures altogether. how many students were there in all?

Answer 1

Students(s) = 192.

Explanation:

Eq:

3s + 9 = 585 (each group of 3 wrote 9 each, so for every group + 9. S = students and 585 is altogether.)

Isolate the 3s by doing the inverse (-) of addition and we do that by subtracting 9 from itself and 585.

Eq: 3s = 576

Lastly, isolate the s by dividing 3 (inverse of *)

Eq:

576

___

3

( s = 192 )

Answer 2

585/3 = 195 students

Explanation:Each group of three created (or used) 9 pictures, so that means three pictures per student.

Dividing 585 students by 3 pictures per student means that there are 585/3=195 students.