Question

Efetue as adições e as subtrações a) (-2/3) + (+1/4)b) (-4/7) + (-2/6)c) (+1/7) - (+1/3)d) (+2/3) - (+1/3)e)( -4/5) - (-1/8)f) (-3/4) -5 com cálculos e respostas

Answer 1

a) -2/3+1/4
-8+3/12
-5/12

b)-4/7-2/6
-24-14/42
-38/42
-19/21

c)1/7-1/3
3-7/21
-4/21

d)2-1/3
1/3

e)-4/5+1/8
-32+5/40
-27/40

f)-3/4-5/1
-3-20/4
-23/4