Question 973933
IN A TWO-DIGIT NUMBER,THE SUM OF THE DIGITS IS 8.THE DIFFERENCE BETWEEN THIS NUMBER AND THE NUMBER WITH THE DIGITS REVERSED IS 54.WHAT IS THE NUMBER
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let u=units digit
let t=tens digit
u+t=8
t=8-u
10t+u-10u-t)=54
9t-9u=54
9(8-u)-9u=54
72-9u-9u=54
18u=18
u=1
t=8-u=7
number: 10t+u=70+1=71