Question

8) Calcule
a) (+3/5) + (-7/5) =
b) (-3/2)+(-5/7) =
c) (+0,3) + (-0,7) =
d)(+4/3) - (+7/4) =
e) (-0,47) - (-0,85) =

Answer 1

Explicação passo-a-passo:

a) 3/5-7/5= -4/5

b) -3/2-5/7= -21/14+10/14= -11/14 mmc= 14

c) 0,3-0,7= -0,4

d) 4/3-7/4= 16/12-21/12= -5/12 mmc= 12

e) -0,47+0,85= 0,38