Answer:
Step-by-step explanation:
you want to use PEMDAS which is parenthesis exponents multiplication division addition subtraction and work your way from left to right. so 15+42=57 and then 24-9=15 and 81-15=66 hope this helped :)
I don’t know it to bad………
It should take her about 3 days to read 3/4 of the book if she reads 1/4 per day.