Question

The units digit of a two digit number is 3 and 7 times the sum of the digit is the number itself . find the number.​

Answer 1

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The unit digit of a two-digit number is 3

u = 3

and seven times the sum of the digits is the number itself.

7(t+u) = 10t+u

Substitute 3 for u:

7(t+3) = 10t+3

7t+21 = 10t+3

-3t = -18

t = 6

The tens digit is 6 and the units digit is 3, so the number is 63.

Thank You

Answer 2

Answer:

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