Asked by Alexander
A 2 digit number is seven times the sum of its digits. The tens digit is 3 more than the units digit. what is the number?
Answers
Answered by
scott
10 t + u = 7t + 7u
t = u + 3
substituting ... 11 u + 30 = 14 u + 21
t = u + 3
substituting ... 11 u + 30 = 14 u + 21
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