Answer:
36 days
Step-by-step explanation:
Just a guess but the LCM of 9 and 12 is 36
The goal is to list the multiples of both 12 and 9 to determine when they first coincide:
(a) 12, 24, 36, 48, 60, 72, 84, 96
(b) 9, 18, 27, 36, 45, 54, 63, 72, 81
The first multiple both numbers have in common is 36. Therefore, it will be 36 days before tacos and chicken are both on the menu again.
0.85
x = 4, y = 9.
3x -2y = -6 and y = x+5
Substitute y = x + 5 in the first equation:
3x - 2(x + 5) = -6
3x - 2x - 10 = -6
x = -6 + 10
x = 4
So y = 4 + 5 = 9.
3b
b+b=2b
2b+b=3b
