The last pair.
Because 2*4/3*4=8/12
I think its D but im not sure
For this case we can propose a system of equations:
x: Let the variable that represents the number of small cookies
y: Let the variable that represents the number of large cookies
According to the statement we have:

We multiply the first equation by -2:

We have the following equivalent system:

We add the equations:

We look for the value of the variable "x":

Answer:
They sold 80 small cookies and 50 large cookies
If you are talking about "Write a number sentence that shows the sum of the 4 color of stars.
1/8 + 1/8 + 1/8 + 1/8 = 4/8, or 1/2
is your answer
for a number sentence, write out the whole thing with the equal sign and the answer
hope this helps