Example 1 : **86 – 68**

Step 1 : Take the bigger number and find the difference of the digits **i.e. 8 – 6 = 2**

Step 2 : Multiply the output of step 1 by **9** * i.e. 9 * 2 *=

**18**Step 3 : **18** (It’s the final answer)

Please try :

**65 – 56****76 – 67****84 – 48**