Question

como calcular 3/4 de 19/15 — 1/2 de 7/15 — 4/9 de 9/21 — 4/7 de 11/18

Answer 1

3/4 *19/15 = 19/20
1/2*7/15 = 7/30
4/9*9/21 = 4/21
4/7*11/18 = 22/63

Answer 2

Primero en forma de fraccion y en un lado en forma decimal.
$\frac{3}{4} * \frac{19}{15} = \frac{57}{60} = \frac{19}{20} =0.95$ .
$\frac{1}{2} * \frac{7}{15} = \frac{7}{30} = 0.23$ ,el 3 es periodico .
$\frac{4}{9} * \frac{9}{21} = \frac{36}{189} = \frac{4}{21} =0.19$ .
$\frac{4}{7} * \frac{11}{18} = \frac{44}{126} =0.35$ .