originalbeast6p2799m
04.10.2020 •
Mathematics
HELP ME PLZ I have only five minutes
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Ответ:
Then 10x = 7.7--
Then 10x - x = 7 => 9x=7 => x=7/9
Say x = 2.3-
10x = 23.3-
10x-x = 9x = 21 => x = 21/9
last one is a bit tougher because it has alternating digits
Say x = 1.013--
100x = 101.313--
100x-x = 99x = 100.3 = x = 1003/990
I multiplied the final fraction with 10 to get integers.