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SashaMirl
@SashaMirl
August 2022
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Кто решит ? Плиз ))(3,4)
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regina12022
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3) 7х/9-3х/4=5/12
28х/36-27х/36=15/36
28х-27х=15
х=15
4) 13х/21+9х/14=1
26х/42+27х/42=1
26х+27х=42
53х=42
х=42:53
х=42/53
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Dots10
1) 7x/9-3x/4=28x-27x/36=x/36=5/122)x=36•5/12=15
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Dots10
13x/21+9x/14=-1
Dots10
1) 13x/21+9x/14=26x+27x/42=53x/42=-1. 2) 53x=-1•42=-42. 3)x=-42/53
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Answers & Comments
Verified answer
3) 7х/9-3х/4=5/1228х/36-27х/36=15/36
28х-27х=15
х=15
4) 13х/21+9х/14=1
26х/42+27х/42=1
26х+27х=42
53х=42
х=42:53
х=42/53