Question

A number decreased by 4 is 41. Why is the value of that number?

Answer 1

the original number was 45 because if you use inverse operations 41+4=45

Answer 2

By formula standards
x - 4 = 41
why?
decreased means subtracting
A NUMBER (x) is subtracted by 4 makes 41
so the answer is 45
45 - 4 = 41