Question

Calcule o resultado das operações a seguir.

a) ( -2/3) + ( +1/2)
B) (-3/4) - (+1/3)
c) (-1/4) - (-5/6)
d) (+5/8) + (-7/12)

Answer 1

a) ( -2/3) + ( +1/2)=-4/6 + 3/6= -1/6

b) (-3/4) - (+1/3)=-9/12 - 4/12= -13/12

c) (-1/4) - (-5/6)=-6/12 + 20/12= -14/12 :2 = -7/6

d) (+5/8) + (-7/12)= 60/24 - 56/24= 4/24 :4 = 1/6