Răspuns:
a) -275/100 - 15/10 = (-275-150)/100 = -425/100= -4,25
b) -4/9 × -3/2 = 2/3
c) (583-58)/900 × -9/7 = 525/900 × -9/7 = - 525/100= -5,25
d) 1 : -22/7 = 1× -7/22= -7/22 = -0,3(18)
e) -65/16 × 8/65 = -1/2
f) [(35-9)/60 - (50-24)/240] × -110/13 =
(26/60 - 26/240) × -110/13 =
(104-26)/240 × -110/13 =
78/240 × -110/13 =
-66/24 =
-11/4 =
-2,75
