Answer:
x=4 and y=1
Step-by-step explanation:
Equation 1) 3x+8y=20
Equation 2) 5x+3y=23
Equation 1) 5(3x+8y=20 )
Equation 2) 3(5x+3y=23)
15x+40y=100
15x+9y=69
(Take away 40y from 9y and 100 from 69)
31y = 31
y=1
Substitute y=1 into equation 1)
3x+8=20
(Take away 8 from both sides)
3x=12
(Divide by 3)
x=4
Plug 7 into each y. 9(7) -4(7) +3
63-28+3
The answer is 38
6 goes into both 42 and 108 (9x12 so you are working with equal measurements) and you get 7/18
Answer:
A minimum of 24 students if all the students share a class with you. Not enough info to decide the largest size of grade.
Step-by-step explanation: