Answer:
The number is equal to 83.18
Step-by-step explanation:
In order to find this number, we need to turn the words into numerical statements.
-90 times the difference between a number = -90(x - 83)
the number plus -99 = x + -99
Now we can set them equal to each other.
-90(x - 83) = x + -99 -----> Distribute
-90x + 7470 = x - 99 ----> Add 90x to both sides
7470 = 91x - 99 -----> Add 99 to both sides
7569 = 91x ------> Divide by 91
83.18 = x