Question

The sum of a number and 5, less than 10, is 3.

Answer 1

The sum of a number and 5, less than 10, is 3 can be expressed as:

x + 5 - 10 = 3
where x is unknown number.

x + 5 = 3 + 10
x + 5 = 13
x = 13 - 5
x = 8