Solve the following cryptarithms: `3 7` `+``A B` `/ 9 A`

Explanation

Solving for unit's place
` 7+B=A`
Solving for ten's place,
`= 3+A=9`
` A=6 and B=−1` which is not possible.
Hence, there is one carry in ten's place, which means`B+7>9`
Now solving for ten's place with one carry.
`= A+3+1=9`
` A=5`
For unit's place subtracting `10` as one cary is given to ten's place.
`= B+7−10=5`
` B=8`
` A=5 and B=8`
`A+B=13`