Question

Alguém pode me ajudar nessas questões de fração?

Answer 1

$a)\\ \\ \frac{6}{25} ~.~2=\frac{6}{25} ~.~\frac{2}{1} =\frac{12}{25}$

$b)\\ \\ \frac{12}{21} :2=\frac{12}{21} :\frac{2}{1} =\frac{12}{21} ~.~\frac{1}{2} =\frac{12}{42} =\frac{2}{7}$

$c)\\ \\ \frac{4}{9} :3=\frac{4}{9} :\frac{3}{1} =\frac{4}{9} ~.~\frac{1}{3} =\frac{4}{27}$

$d)\\ \\ \frac{3}{15} ~.~3=\frac{3}{15} ~.~\frac{3}{1} =\frac{9}{15} =\frac{3}{5}$

$e)\\ \\ 2~inteiros~e~\frac{1}{3}= \frac{6}{3} +\frac{1}{3} =\frac{7}{3} \\ \\ \frac{7}{3} :5=\frac{7}{3} :\frac{5}{1} =\frac{7}{3} ~.~\frac{1}{5} =\frac{7}{15}$

Answer 2

A)6/25= (6×2=12) (25×2=50)
6/25=12/50

B)12/21= (12÷2=6) (21÷2=10,5)
12/21=6/10,5

C)4/9= (4÷3=0,25) (9÷3=3)
4/9=0,25/3

D)3/15= (3×3=9) (15×3=45)
9/45

1
E)2 --- =2 2/15
3
Espero ter ajudado✌️❤️!
Bons estudos.