Question

Me ajudem e me expliquem como faço essas continhs obrigado

Answer 1

primeiro vai faze o mmc 

a) mmc entre 1, 2 e 3 é (6)

4/1+1/2+2/3=

6.4/6+ 1.3/6+ 2.2/6= 

24/6+3/6+4/6=   31/6


b)mmc= 15

1/3+2.1/5=

1/3+2/5= 

1.5/15+6/15= 11/15


c) mmc=60

0/10+3/20+11/30

6.0/60+3.3/60+2.11/60= 

9/60+ 22/60= 31/60


d)mmc= 15

2-1/3-1/5

2.15/15-1.5/15-3/15=

30/15-5/15-3/15= 22/15


2-a)mmc=42

23/7+1/3-2+1/6

23.6/42+1.14/42-2.42/42+1.7/42=

138/42+14/42-84/42+7/42= 75/42


b)mmc= 24

4.2/3-1.1/2+7/8=

8/3-1/2+7/8=

8.8/24-1.12/24+7.3/24=

64/24-12/24+21/24= 73/24 

espero ter ajudado