Question

URGENT.  1)Calculati : [(3supra25-1,5) •1,(6)+(0,1(6)+$2 \frac4 5$)]:0,(074)=

Answer 1

[(3/25-15/10) * (1+ 6/9) + ( 16-1/90+14/5)]:74/999= (amplificam 3/25 cu 2 , 15/10 cu 5 si simplificam 6/9 cu 3 si amplificam 1/6 cu 5 si 14/5 cu 6)
=[(6/50-75/50)*(1+2/3) + (1/6 + 14/5)]*999/74
=[(-69/50) * 5/3 + (1/30 + 84/30)]*999/74
=(-23/10+85/30)*999/74 (amplificam 23/10 cu 3)
=(85/30 - 69/30)*999/74
=16/30*999/74(simplificam cu 6)
=8*333/10*37
=2664/370 ( simplificam cu 2)
=1332/185
Sper ca te-am ajutat. Succes in continuare !