Question

Preciso de uma ajuda urgente.
Me ajudem com o exercício 3, 6,7

Answer 1

3.
a)
= 17/13

b)
= 6/15= 2/5

c)
=3 6/7

d)
= 9/15-10/15= -1/15

e)
= 3/6-5/6= -2/6= -1/3

f)
= 12/15-7/15= 5/15= ⅓


6.
a)
=12/63= 4/21

b)
=3/20

c)
= 3/4*8/3= 24/12= 2

d)
= 7/9*3/14=21/126= 1/6


7.
a)
= 4/5-2/18= 24/30-5/30= 19/30

b)
= 3/10+2/3= 9/30+6/30= 15/30= ½

c)
= 1/3+4/5*10/3= 1/3+ 40/15= 1/3+8/3= 9/3= 3

d)
= 3/7*14/3-3/5= 42/21-3/5= 2-3/5= 7/5