a number between 10 and 100 is 8 times the sum of its digits, and if 45 be subtracted from
digits will be reversed. Find the number
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2
Answer:72
Step-by-step explanation:
10x+y=8(x+y)
2x-7y=0 eq 1
10x+y-45=10y+x
9x-9y=45 eq 2
solve eq simultaneously
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see in photo
that is the clear explanation
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