Outra questão, estou com dificuldade
Anexos:
2-
a) (3-1/2)*4 = =12-2 =6
b) 5-(3/2)*3 =5-9/2 =10/2-9/2=1/2
c) (3/2) / 2 +2/5 =(3/2)/(2/1) +2/5 =(3/2)*(1/2)+2/5
=3/4 +2/5 =15/20+8/20=23/20
d) (5/2)*(1/3) +2/(3/4) =5/6 +2*(4/3) =5/6+8/3
=15/18+48/18=63/18=21/6
e) 5/3 -(4/3-1/2)=5/3 -(8/6-3/6)=5/3-5/6
=10/6-5/6=5/6
f) 7/5-(3/5)/(2/3)=7/5-(3/5)*(3/2)=7/5 -9/10
=14/10-9/10 =5/10=1/2
g) 3-(2-1/3*4)=3-(2-4/3)=3-(6/3-4/3)=3-2/3
=9/3-2/3=7/3
h)(5/12)/(1/2-1/3)=(5/12)/(3/6-2/6)=(5/12)/(1/6)
=(5/12)*(6/1) =5/2
a) (3-1/2)*4 = =12-2 =6
b) 5-(3/2)*3 =5-9/2 =10/2-9/2=1/2
c) (3/2) / 2 +2/5 =(3/2)/(2/1) +2/5 =(3/2)*(1/2)+2/5
=3/4 +2/5 =15/20+8/20=23/20
d) (5/2)*(1/3) +2/(3/4) =5/6 +2*(4/3) =5/6+8/3
=15/18+48/18=63/18=21/6
e) 5/3 -(4/3-1/2)=5/3 -(8/6-3/6)=5/3-5/6
=10/6-5/6=5/6
f) 7/5-(3/5)/(2/3)=7/5-(3/5)*(3/2)=7/5 -9/10
=14/10-9/10 =5/10=1/2
g) 3-(2-1/3*4)=3-(2-4/3)=3-(6/3-4/3)=3-2/3
=9/3-2/3=7/3
h)(5/12)/(1/2-1/3)=(5/12)/(3/6-2/6)=(5/12)/(1/6)
=(5/12)*(6/1) =5/2
Soluções para a tarefa
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Resposta:
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B)
C)
D)
E)
F)
Espero ter ajudado ;)
Ajudou bastante! Obrigada!
:)
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a) 7/3+1/6 =14/6+1/6=17/6
b) 2/5+1,7=0,4+1,7=2,1=21/10
c) 7/8-1/3 =21/24-8/24 =13/24
d) 17/6-3/2=17/6-9/6 = 8/6=4/3
e) 8/5-3/2=16/10-15/10=1/10
f) 14/5-1,4=15/5-14/10 =15/5-7/5=8/5
g) 5/6+11/3=15/18+66/18 = 81/18=9/2