#### If two numbers are divisible by a number,

#### their difference is also divisible by the number

**
16 & 20 is divisible by 4
**

Difference = 20 − 16 = 4

∴ 4 is also divisible by 4

**
36
**
**
&
**
**
78 are
**
**
divisible by
**
**
6
**

Difference = 78 − 36 = 42

∴ 42 is also divisible by 6

**
100 & 25 are divisible by 5
**

Difference = 100 − 25 = 75

∴ 75 is also divisible by 5