50 students were asked what they did last night. 16 said they read a book, 41 said they watched TV, 7 said they did neither, how many students did both​

14 students

Step-by-step explanation:

Given

Let:

read a book

watched TV

So, we have:

-- total

Required

Students that did both (x)

This is calculated using:

So, we have:

This gives:

Open brackets

Collect like terms

Hence, 14 students did both

days of the week

step-by-step explanation:

javier earned more money then kyle, so that won't always be a constant term, but the days of the week do not change so that term is always constant.

edit: i meant

sorry man i accidentally pressed yes my bad

step-by-step explanation: