Hi . how u r doing good. pls help me with these questions , I really need help A) Divide the difference of 2/15, -16/20 by their product.

B) The product of two rational numbers is -3/7. If one of the number is 5/21, find the
other

C) Compute 9/5x -2/27+7/30

D) 5/7 – 2/3| + |3/14 – 5/7

Thank you :)

Which grade's question is this?

a. 3/4 ÷ 1/8 = 6

step-by-step explanation:

in the question, the number line represents 3/4 divided into 6 equal units. each arrow represents a unit and there are a total of six arrows.

the size of each unit is 1/8 as shown.

showing that 1/8 divides 3/4 into 6 divisions:

3/4 ÷ 1/8

= 3/4 x 8/1

= 3/1 x 8/4

= 3 x 2

= 6

hence, the number line represents six divisions given by 3/4 ÷ 1/8.