Question

2. Calculati:
3
5.
b) 5 :
c) 8 :
4
a) 3:
ia
112 3
d) 2 : 35
3를
그를
8.
:6;
f)
h) 2- : 2.
g) - : 3;
3
7
3​ dau coroana

Answer 1

$\frac{3}{1} \div \frac{5}{2} = \frac{3}{1} \times \frac{2}{5} = \frac{6}{5}$

$\frac{5}{1} \div \frac{3}{4} = \frac{5}{1} \times \frac{4}{3} = \frac{20}{3}$

$\frac{8}{1} \div \frac{1}{2} = \frac{8}{1} \times \frac{2}{1} = \frac{16}{1} = 16$

$\frac{2}{1} \div 3 \times \frac{1}{2} = \frac{2}{1} \div \frac{3 \times 2 + 1}{2} = \frac{2}{1} \div \frac{6 + 1}{2} = \frac{2}{1} \div \frac{7}{2} = \frac{2}{1} \times \frac{2}{7} = \frac{4}{7}$

$\frac{5}{3} \div \frac{4}{1} = \frac{5}{3} \times \frac{1}{4} = \frac{5}{12}$

$\frac{8}{7} \div \frac{6}{1} = \frac{8}{7} \times \frac{1}{6} = \frac{8}{42}$

acum simplificăm fracția cu 2

$\frac{4}{21}$

$\frac{1}{3} \div \frac{3}{1} = \frac{1}{3} \times \frac{1}{3} = \frac{1}{3}$

$2 \times \frac{3}{2} \div \frac{2}{1} = \frac{2 \times 2 + 3}{2} \div \frac{2}{1} = \frac{4 + 3}{2} \div \frac{2}{1} = \frac{7}{2} \times \frac{1}{2} = \frac{7}{2}$