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Romashka-Z-Leto [24]
3 years ago
9

The sum of the two digits of a number is 16. The number formed by reversing the digits is 18 more than the original number. Dete

rmine the original number. Let t = the tens digit, u = the units digit, and u + t = 16. Which of the following equations would complete the system? 9t - 9u = 18 9u - 9t = 18 tu = ut + 18
Mathematics
1 answer:
nydimaria [60]3 years ago
5 0
9u-9t=18

original no. is 10t+u
reversed no. is 10u+t

so its (10u+t)-(10t+u)=18
which gives 9u-9t=18
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