Which of the following expressions are equivalent to -4/8 - 8/9 + 4/7 +9/8

Choose 2 answers:
a) -4/7-(8/9+4/7)+9/8
b) -(4/7-8/9+4/7)+9/8
c) -8/9+9/8
d) -(4/7+8/9)+4/7+9/8
e)0

**this is from
khan academy**

answer: answer: d) v= 1/6 bh  

step-by-step explanation:

since according to the given question,   a pyramid is placed inside a prism.

step-by-step explanation:

do have an equation or graph or

step-by-step explanation:

i have no idea just need points sorry

step-by-step explanation:

x is the total time in minutes for the free response

you are given number of questions as 15 - m and time per item as 8 minutes

to find x multiply the two givens together:

x = 8 * (15-m) = 8(15-m)