Question

calculati b) 1,4- 0,(5) : 2

Answer 1

$b) \: 1.4 - 0.(5) \div 2 = \frac{14}{10} - \frac{5}{9} \times \frac{1}{2} = \frac{7}{5} - \frac{5}{18} = \frac{126 - 25}{90} = \frac{101}{90}$

Answer 2

1,4=14/10(simplificam prin 2)=7/5
0,(5)=5/9
=7/5-5/9:2
=7/5 - 5/9 ×1/2
=7/5- 5/18= (aducem la același numitor(90),si amplificăm prima fracție cu 18,a doua cu 5)
=126/90-25/90=
=101/90