Question

calculează:
a) 5 supra 9 ÷ 7 supra 2 =
b) 12 supra 7 ÷ 30 supra 11 =
c) 2 supra 14 ÷ 3 supra 35 =

vă rog frumos.​

Answer 1

a)

$\frac{5}{9} \div \frac{7}{2 } = \frac{5}{9} \times \frac{2}{7} = \frac{10}{63}$

b)

$\frac{12}{7} \div \frac{30}{11} = \frac{12}{7} \times \frac{11}{30} = \frac{132}{210} = \frac{66}{105 } = \frac{22}{35}$

c)

$\frac{2}{14} \div \frac{3}{35} = \frac{2}{14} \times \frac{35}{3} = \frac{70}{42} = \frac{35}{21 } = \frac{5}{3}$