Question

Calculeaza: {[1 + (14 + 14.3): 4] + [2 - (20 - 4.2):12] . 10}: 5.
​

Answer 1

Răspuns:

{[ 1 + ( 14 + 14 × 3): 4] + [2 - (20 - 4 × 2) : 12] × 10 } : 5

= {[ 1 + (14 + 42) : 4 ] + [2 - (20 - 8) : 12 ] × 10 } : 5

= [( 1 + 56 : 4 ) + (2 - 12 : 12 ) × 10 ] : 5

= [( 1 + 14 ) + ( 2 - 1 ) × 10 ] : 5

= ( 15 + 1 × 10 ) : 5

= ( 15 + 10 ) : 5

= 25 : 5

= 5