Question 945078
the sum of the digits of a two digit number is 11. the tens digit is one less than three times the ons digit. find the original equation
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let u=units digit
let t=tens digit
u+t=11
u=11-t
..
t=3u-1
t=3(11-t)-1
t=33-3t-1
4t=32
t=8
u=11-t=3
number:83