Question

resolver: 2 x 3 x 4 + 8/10 + 12 x 2 - 20

Answer 1

2x3x4+8/10+12x2-20 =
24+8/10+24-20 =
240/10+8/10+240/10-200/10 =
248/10+240/10-200/10 =
488/10-200/10 =
288/10 =
144/5

Answer 2

Hola! 

primero multiplica los numeros

$24+ \frac{8}{10} +24-20$

ahora ultilza la suma y resta

$28+ \frac{8}{10}$

calcula
$28 \frac{8}{10}= 28 \frac{4}{5}$

utiliza la plancha

$\frac{28 x 5 + 1 x 4}{1 x5} = \frac{140 + 4}{5}= \frac{144}{5}$


y asi quedaria saludos