Question 501633
1. Let x = the number, the other number would be x-19

x + x-19 = 65
2x-19=65
2x=84
x=84/2
x=42

The other number is 42-19=23. So the two numbers are 42 and 23.

2. Similar to the last one...


x+x-7 = 39
2x-7=39
2x=46
x=46/2
x=23

The other number is 16.


I don't understand the 3rd question, sorry.


Hope that helps for the first two!