Question

cuánto es 1/2{2/5+[(1/7-1/8)-(1/4 - 1/5)]}​

Answer 1

Respuesta:

= 103/560

Espero que te sirva! Saludos!

Answer 2

Respuesta:

$\frac{103}{560}$ = 0.1839285714

Explicación paso a paso:

1/2 { 2/5 + [ ( 1/7- 1/8 ) - ( 1/4 - 1/5 ) ] }

= 1/2 { 2/5 + [ ( $\frac{1}{56}$ ) - ( $\frac{1}{20}$ ) ] }

= 1/2 { 2/5 + [- $\frac{18}{560}$ ] }

-18/560 = -9/280

= 1/2 { 2/5 + [- $\frac{9}{280}$ ] }

= 1/2 { $\frac{112}{280}$ -  $\frac{9}{280}$ ] }

= 1/2 { $\frac{103}{280}$ }

= $\frac{103}{560}$

= 0.1839285714