Question

Calcule.
a) 13/9 - 5/8 - 1/18 =
b) 4/5 - 2/7 -2/35 =
c) 3/4 - 2/3 - 1/12 =
d) 20/5 - 3/4 - 1/2 =
e) 2 5/6 - 1/3 =
f) 4 5/8 - 1 3/4 =
ME AJUDEM POR FAVOR !

Answer 1

a) 13/9 - 5/8 - 1/18
>>(21 - 14/72) - 1/18
>>7/72 - 1/18
>>7 - 4/72
>> 3/72...(÷3)
>>1/24

b) 4/5 - 2/7 - 2/35
>>(28 - 10/35) - 2/35
>>18/35 - 2/35
>>16/35

c) 3/4 - 2/3 - 1/12
>>(3/4 - 2/3) - 1/12
>>( 9 - 8/12) - 1/12
>>1/12 - 1/12
>>0

d) 20/5 - 3/4 - 1/2
>>(80 - 15/20) - 1/2
>>65/20 - 1/2
>>65

e) 2. 5/6 - 1/3
>>17/6 - 1/3
>>17 - 2/6
>>15/6
Resolvendo fracoes mista
2 5/6
6/6 . 2 + 5/6
12/6 + 5/6
17/6.......Ok

f) 4. 5/8 - 1. 3/4
>>37/8 - 7/4
>>37 - 14 /8
>>23/8

Resolvendo fracoes mista
4. 5/8
8/8 . 4 + 5/8
32/8 + 5/8
37/8....Ok

1. 3/4
4/4 . 1 + 3/4
4/4 + 3/4
7/4....Ok