Answer:
-2
Explanation:
Let's call the unknown number x.
We are given that:
1/x + 15 = 13
To find the value of x, we need to isolate x on one side of the equation.
To do this, we can subtract 15 from both sides:
1/x + 15 - 15 = 13 - 15
This gives us:
1/x = -2
To find x, we can multiply both sides by x:
x * (1/x) = x * (-2)
This gives us:
x = -2x
Therefore the number is -2