1- efetue as adições e simplifique o resultado se possível
a) 3/4 - 2/3 - 1/2 :
b)6/5 - 1/10 + 3/10:
c)1/2 - 3/4 - 4/3:
d)1/7 - 2/5:
e)4/3 + 1/5 + 2/7:
f)1/2 + 2/3 + 1/4:
g)3/4 - 1/2 - 7/6
a) 3/4 - 2/3 - 1/2 :
b)6/5 - 1/10 + 3/10:
c)1/2 - 3/4 - 4/3:
d)1/7 - 2/5:
e)4/3 + 1/5 + 2/7:
f)1/2 + 2/3 + 1/4:
g)3/4 - 1/2 - 7/6
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Resposta:
1.
a) 3/4-2/3-1/2=-0,1
b) 6/5-1/10+3/10=8,5
c) 1/2-3/4-4/3=-6,5
d) 1/7-2/5=-0,8
e) 4/3+1/5+2/7=8,5
f) 1/2+2/3+1/4=4,9
g) 3/4-1/2-7/6=-5,4