Answer:
Step-by-step explanation
let's make the number, x, because it is unknown
then minus 13 from x ,like so:
x-13
because difference means minus
then x-13= 48
Equation solving:
what you would do to solve this is bring the 13 to the right side and to do this you'd have to change the minus sign to a plus like this:
x-13=48
x=48+13
then you simply solve the sum
x=61
now we know the unknown number(x) is 61