ambriyaarmstrong01
18.09.2019 •
Mathematics
Twice a number increased by 12 is equal to 31 less than three times the number find the number
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Ответ:
3n - 31 = 2(n + 12)
3n - 31 = 2n + 24
3n - 2n = 24 + 31
n = 55
Ответ:
7/8 * cm/ month * 5 months =
35/8 cm
4 3/8 cm
4 3/8 cm