-2y + 2
Explanation
We have (x - y + 1) - (x + y - 1)
Let’s expand the Parentheses
= x - y + 1 - x - y + 1
Then let’s group the like terms
= (x - x) + (- y - y) + (1 + 1)
= 0 - 2y + 2
= 2y + 2
25% decrease because if you multiply 20x.25 you get 5 and you minus the 5 from 20 books and you get 15 books
The decimal equivalent of 1/4 is 0.25.
Answer:
B
Step-by-step explanation:
50X0.26=13 than you would add them 50+13 which would equal 63