Question

Problema 5 va rog.dau coroana .

Answer 1

Răspuns:

Explicație pas cu pas:

5.

a + b + c = 15/8

a + b = c + 9/8

________

c + 9/8 + c = 15/8

2c = 15/8 - 9/8 = 6/8

c = 6/8 : 2 = 6/8*1/2 = 3/8

_________

a + b = 3/8 + 9/8 = 12/8 = 3/2

b - a = 1/6

a + b + b - a = 3/2 + 1/6

2b = 3/2 + 1/6 = 9/6 + 1/6 = 10/6 = 5/3

b = 5/3 : 2 = 5/3*1/2 = 5/6

a = 3/2 - b = 3/2 - 5/6 = 9/6 - 5/6 = 4/6 = 2/3

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Verificare

2/3 + 5/6 + 3/8 = 16/24 + 20/24 + 9/24 = 45/24 = 15/8