Mr. guo is thinking of a number. when he takes the absolute value of his number, he gets 15. what could his number be? is there more than one possible answer?

15 or -15

Step-by-step explanation:

The absolute value of a number can be defined as the distance between number and 0 is same on the number line whether it is the left side of the 0 or right side. It is denoted by |x|.

Example: |6| = 6 and |-6| =6

Hence, absolute value of |15| = 15 and |-15| = 15.

Thus, there can be two numbers 15 and -15 whose absolute value is 15.

-8/2y-8=5/y+4-7y+8/y^2-16

we move all terms to the left:

-8/2y-8-(5/y+4-7y+8/y^2-16)=0

we can not solve this equation