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Lacatasloredana25
a fost răspuns

1. Calculați :
a) 5/21:10/7
b) (1/3-1/9)×27
c) 4/9:(1/3×5/3)
d) 2/5+4/9:10/9​

Răspuns :

Răspuns:

Explicație pas cu pas:

a) 5/21:10/7  = 5/21 x 7/10 = 1/6

b) (1/3-1/9)×27  = (3/9 - 1/9) x 27 = 2/9 x 27 = 6

c) 4/9:(1/3×5/3)  = 4/9 : 5/9 = 4/9 x 9/5 = 4/5

d) 2/5+4/9:10/9​ = 2/5 + 4/9 x 9/10 = 2/5 + 2/5 = 4/5