Moramath
5 год назад
2b - 2/5 умножить b , если b= 4 3/5
ОТВЕТЫ
Страхил
Nov 29, 2020
2b - b • 2/5 =
= 2b - 2b/5 =
= 10b/5 - 2b/5 = 8b/5
b = 4 3/5
8b/5 = (8 • 4 3/5) / 5 =
= 8 • 23/5 : 5 =
= 8 • 23/25 = 184/25 = 7 9/25
= 2b - 2b/5 =
= 10b/5 - 2b/5 = 8b/5
b = 4 3/5
8b/5 = (8 • 4 3/5) / 5 =
= 8 • 23/5 : 5 =
= 8 • 23/25 = 184/25 = 7 9/25
193
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