the sum of the digits of a 2-digit number is 7. if the digits are reversed ,the new number increased by 3 equals 4 times the original number.find the original number.
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Answer:
by heat-and-trial method
Step-by-step explanation:
the numbers which have sum 7 are 16,25,34
firstly we would take 16
after reversing =61
61+3=64 and 64 is four times of 16
16×4=64
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