Question

Calcule as expressões: A) 3/5 - 1 - 2/5 = B) 4 - 1/10 + 2/5 = C) 1/2 - (-3/5) + 7/10 = D) -2 - (-1/2) - 1/8 = E) 5/12 + (-1/4) - (+1/6) =

Answer 1

A) 3/5-1-2/5=
3/5-5/5-2/5= -4/5

B) 4-1/10+2/5=
(40-1+4)/10= 43/10

C) 1/2-(-3/5)+7/10=
(5-(-6)+7)/10= 18/10

D) -2-(-1/2)-1/8=
(-16-(-4)-1)/8= -13/8

E) 5/12+(-1/4)-(1/6)=
(5+(-3)-2)/12= 0