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School1203
@School1203
July 2022
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Помогите найти решение выражения: 2/5m, если m=1/2, 2/5, 1 целая 7/8, 15/16
Номер 458
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zhenyaM2002
Verified answer
2/5 × m
m= 1/2 ⇒ 2/5 × 1/2 =1/5
m= 2/5 ⇒ 2/5 × 2/5 = 4/25
m= 2 1/2 ⇒ 2/5 × 2 1/2 = 2/5 × 5/2 = 1
m= 1 7/8 ⇒ 2/5 × 1 7/8 = 2/5 * 15/8 = (1*3)/(1*4)=3/4
m=15/16 ⇒ 2/5 × 15/16 = (1*3) /(1*8) = 3/8
4/9 × x
x= 1/4 ⇒ 4/9 × 1/4 = 1/9
x= 4/9 ⇒ 4/9 × 4/9 = 16/81
x= 4 1/2 ⇒ 4/9 × 4 1/2 = 4/9 × 9/2 =4/2 = 2
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Verified answer
2/5 × mm= 1/2 ⇒ 2/5 × 1/2 =1/5
m= 2/5 ⇒ 2/5 × 2/5 = 4/25
m= 2 1/2 ⇒ 2/5 × 2 1/2 = 2/5 × 5/2 = 1
m= 1 7/8 ⇒ 2/5 × 1 7/8 = 2/5 * 15/8 = (1*3)/(1*4)=3/4
m=15/16 ⇒ 2/5 × 15/16 = (1*3) /(1*8) = 3/8
4/9 × x
x= 1/4 ⇒ 4/9 × 1/4 = 1/9
x= 4/9 ⇒ 4/9 × 4/9 = 16/81
x= 4 1/2 ⇒ 4/9 × 4 1/2 = 4/9 × 9/2 =4/2 = 2