2. only one of the comparisons below is
incorrect. which is incorrect?
a1/4< 1/3
b3/8> 1/4. c5/6=7/8. d1/3< 2/5

C.  5/6  =  7/8  is an INCORRECT comparison.

Step-by-step explanation:

Here, the given comparisons are:

A.  1/4  <  1/3

Solving the fraction,we get:

1/4 = 0.25 and 1/3 = 0.333

Also, 0.25 < 0.33

⇒   1/4  <  1/3  is a CORRECT comparison.

B.  3/8 > 1/4

Solving the fraction,we get:

3/8 = 0.375 and 1/4 = 0.25

Also, 0.375 > 0.25

⇒   3/8 >  1/4  is a CORRECT comparison.

C. 5/6  =  7/8

Solving the fraction,we get:

5/6 = 0.833 and 7/8 = 0.875

Also,0.833 ≠ 0.875

⇒   5/6  =  7/8  is an INCORRECT comparison.

D.  1/3  <  2/5

Solving the fraction,we get:

1/3 = 0.333 and 2/5 = 0.4

Also,0.333 < 0.4

⇒   1/3  <  2/5  is a CORRECT comparison.

b

step-by-step explanation:

c.

step-by-step explanation:

because first you have to add the 4x, 9x, and the 7x together and you get 20x and then you add the last numbers up and you get 5and then you put the subtraction sign in there and that's how you get the answer.