Answer:
Step-by-step explanation:

d=-8 is the answer for first eqn
Answer:-5
Step-by-step explanation:
Answer:
Benjamin then student wearing black t-shirt then the student wearing white then who wear blue then lucas then fatima
Step-by-step explanation:
where fatima is the first one then the others beside her one by one
There is no equation to solve. I think you forgot to put it.