Răspuns:
Explicație pas cu pas:
1
a) -275/100-15/10=-11/4-3/2=-(11-6)/4=-5/4
b)4/9x3/2=2/3
c)-525/900×9/7=-75/10=3/4
d)-7/22
e)-65/16×8/65-=1/2
f)[(35-9)/60-(25-12)/120]×(-110/13)=(26/60-13/120)×(-110/13)=
=- 39/120×110/13=-11/4
2)
a) 6+(2+11+15+6)/17=6+34/17=6+2=8
b)- 49 -(5+4+12)/21=-49-1=-50
