Answer:
Step-by-step explanation:
Hello, please consider the following.
For any x real number different from 0, we can write.

And this is defined for 2y-1 different from 0, meaning y different from 1/2
Thank you.
Answer:
4
Step-by-step explanation:
6.4 / 1.6 = 4
1.6 goes into 6.4 four times
Answer:
-7/8
Step-by-step explanation:
-1 1/7 is in improper fraction form -8/7
-8/7x = 1
x = -7/8
Answer:
$108
Step-by-step explanation:
1 box = $12
18 boxes = 12×18 = $216
Total = 18×65 = 1170 pens
Cost price, Cp = $216
3 = $1
378 = 378/3 = $126
1170-378= 792 pens remaining
4 = $1
792 = 792/4 = $198
Total selling price, sp = 126+198 = $324
Profit = Sp - Cp = 324 - 216 = $108