Question

am nevoie de ajutor cu punctul c si d

Answer 1

Răspuns:

c) [(3/25-15/10)·15/9+(15/90+14/15)]:74/999=

  [(6/50-75/50)·15/9+(1/6+14/5)] · 999/74=

[ (-69/50)·15/9+(5/30+84/30)] · 999/74=

( -23/10+89/30)·999/74= ( -69/30+89/30)·999/74=20/30·999/74=9

d) 1/(-2/10)·1/10²+125/1000:1/10-15/90·36/10=

 -10/2·1/100+5/4-3/5=-1/20+5/4-3/5=-1/20+25/20-12/20=12/20=3/5=0,6

Explicație pas cu pas: