Answer:
b=4 a=3
The first digit is 3 and the second 4 so the original number is 34
To be honest! It would be much quicker to solve by trial and error.
Explanation:
Building the equations
Let the first digit be
a
Let the second digit be
b
The first condition
a
+
b
=
7
...............................(1)
Step-by-step explanation:
