Question 610354
The sum of two digit number is 7. If 26 is subtracted from the number,the result is twice the unit digit. Find the two digit number
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let u=units digit
let t=tens digit
t+u=7
t=7-u
..
two digit number=10t+u
10t+u-26=2u
10(7-u)+u-26=2u
70-10u+u-26=2u
11u=44
u=4
t=7-u=3
two digit number=10t+u=30+4=34