Question

9)Resuelve las siguientes operaciones con *fracciones*:

a)2/3 de 90
b)4/5 + 3/2
c)5/7 : 9/4
d)2/3 • 7/8 • 1/2
e)1/2 - 2/5 + 4/3
f)4/5 - 3
g)3/2 + 2/5 • 3/4
h)3/4 : 2/3 + 9/4 • 1/2​

Answer 1

Respuesta:

$\frac{2}{3} \times 90 = \frac{180}{3} = 60$

$\frac{1}{2} - \frac{2}{5} + \frac{4}{3} = \frac{5 - 4}{10} + \frac{4}{3} = \frac{1}{10} + \frac{4}{3} = \frac{3 + 40}{30} = \frac{43}{30}$

$\frac{4}{5} - 3 = \frac{4 - 15}{5} = \frac{ - 11}{5}$

$\frac{3}{2} + \frac{2}{5} \times \frac{3}{4} = \frac{3}{2} + \frac{6}{20} = \frac{60 + 12}{40} = \frac{72}{40}$

$\frac{3}{4} \div \frac{2}{3} + \frac{9}{4} \times \frac{1}{2} = \frac{9}{8} + \frac{9}{8} = \frac{18}{8}$

$\frac{4}{5} + \frac{3}{2} = \frac{8 + 15}{10} = \frac{23}{10}$

$\frac{5}{7} \div \frac{9}{4} = \frac{5 \times 4}{7 \times 9} = \frac{20}{63}$

$\frac{2}{3 } \times \frac{7}{8} \times \frac{1}{2} = \frac{2 \times 7 \times 1}{3 \times 8 \times 2} = \frac{14}{48}$