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Mathematics 11 Online
OpenStudy (anonymous):

the sum of the digits of a two-digit number is 9. the sum of the number and its units digits is 74. find the number. does anyone know how to work this problem?

OpenStudy (anonymous):

wat r the answers

OpenStudy (anonymous):

well on the back of the book is said that the answer is 72

OpenStudy (anonymous):

cuz sum means add an it says the sum of a teo digit number is 9.then the sum which means wat u get when u add its unit digit wat is like XorN an that is 74

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