The tens digit of a two digit number is five more than the units digit. Seven times the sum of the digits of this number is 3 less than the number itself. Find the number.

94

Step-by-step explanation:

Let the unit's digit =

Let the ten's digit =

Then the number will be equal to

Now, using the given statement:

Now, using the equation (1) in equation (2):

By equation (1):

Therefore, the number is :

a - base

b - exponent

so,