First thing First. You must find have a common denominator. If you want to find it then you do this
3: 3 6 9 12 15 18 21
7: 7 14 21 28
Once you found a number they have in common (21) You do this next
3/7 * 3/3 = 9/21
2/3 * 7/7 = 14/21
Now the next thing you do is subtract your numerators but not the denominators
14-9=5
5/12
you cant simplified so your done! Hope this helps!!!! <span />
If you solve for theta, it would be 3pi/4
Let the number of students who bought tickets be s,
Let the number of adults who bought tickets be a,
Equation 1:

Equation 2:

Substitute ( 2 ) into ( 1 ),

Substitute a = 110 into ( 2 ),

Ans: 40 Student Tickets, 110 Adult Tickets
Answer:
x=7
step-by-step explanation:

5(2x+10) =3×40
10x + 50 = 120
10x =120-50= 70
x = 70/10= 7