Asked by Joe Mhar Plaza
exploring mathematics elementary algebra....the sum of the digits of a two-digit number is 12. the value of the number is equal to 11 times the tens digit. find the number.
Answers
Answered by
Writeacher
Assistance needed.
Answered by
Reiny
let the unit digit be x
let the tens digit be y
so the "value" of the two digit number is 10y + x
and then you said:
10y + x = 11y
x = y
but we also know x+y = 12
mmmh? Can you think of two numbers that are equal and add up to 12 without doing the algebra?
let the tens digit be y
so the "value" of the two digit number is 10y + x
and then you said:
10y + x = 11y
x = y
but we also know x+y = 12
mmmh? Can you think of two numbers that are equal and add up to 12 without doing the algebra?
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