Answer:
y = x - 10
Step-by-step explanation:
10 less than a number is the same as 10 subtracted from the number.
If you start with 30, 10 less than 30 is the same as 10 subtracted from 30.
30 - 10 = 20. The input is 30, and the output is 20, which is 10 less than 30.
If you start with x, 10 less than x is the same as 10 subtracted from x, or x - 10. The input is x. Subtract 10 from the input, or x - 10. The output equals x - 10.
y = x - 10
