Question

Calcule:

A)4/9 - (+2/3)=

B)7/5 +(-5/3)=

C)-11/5+3=

D)(-4) . (-3/11)=

E)5/9 . 9/20=

F)(+6/7) : (-9/7)=

G)(-5/27):(-10/9)=

Answer 1

a)4/9-(+2/3)=
   12/27-(+18/2=7)=
   12/27-18/27= -6/27

b)7/5+(-5/3)=
  21/15+(-35/15)=
 21/15-35/15= -14/15

c)-11/5+3/1=
  -11/5+15/5= +4/5

d)(-4/1).(-3/11)= 12/11

e)5/9.9/20= 5/20 (anula os dois 9)

f)(+6/7):(-9/7)= (+6/7).(-7/9)= -6/9= -2/3

g) (-5/2):(-10/9)= (-5/2).(-9/10)= (-1/2).(-9/2)= +9/4  (5:5=1 e 10:5=2)

espero ter ajudado! \(^0^)/