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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?
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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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