Answer: The number is 1.
Explanation:
Let the number be x
5-x = 1+3x
or, 5 = 1+3x+x
or, 5 = 1+4x
or, 5-1 = 4x
or, 4x = 4
or, x = 4/4
so, x = 1
5.8m questions
7.5m answers