Question

Students in grades 6, 7, and 8 sold a total of 320 concert tickets. Grade 6 students sold x tickets, grade 7 students sold s tickets, and grade 8 students told t tickets.
Use the equation x+s+t=320 to find x, the number of tickets that were sold by grade 6 students.
A.) x=320-t+s
B.) x=320-t-s
C.) x=320+t-s
D.) x=s-t-320

Answer 1

Take your equation:

x+s+t=320

and subtract "t" and "s" from both sides.

Answer 2

All good now, @EmmieCupcakez ?

Answer 3

I get it now, thank you !

Answer 4

Good job!