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ThePinkLamb
@ThePinkLamb
July 2022
2
15
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Число увеличили на 77, и оно составило 10/7 от исходного числа. Найдите исходное число.
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tamarabernukho
X+77=10/7 *x
7x+77*7=10x
3x=539
x=539/3
x=179 2/3
5 votes
Thanks 12
sedinalana
Число было х
х+77=10х/7
10х/7-х=77
3х/7=77
х=77:3/7
77*7/3
х=539/3
х=179 2/3
3 votes
Thanks 3
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Answers & Comments
7x+77*7=10x
3x=539
x=539/3
x=179 2/3
х+77=10х/7
10х/7-х=77
3х/7=77
х=77:3/7
77*7/3
х=539/3
х=179 2/3