Question

7) O grupo onde todas as frações são equivalentes à fração 2/5 é:

A)6/10, 9/15, e 15/25
B)4/10, 6/15, 8/20 e 10/25
C)2/10, 3/15, 4/20 e 5/25
D)8/10, 12/15, 16/20 e 20/25​

Answer 1

Explicação passo-a-passo:

• $\sf \dfrac{2}{5}=\dfrac{2\cdot2}{5\cdot2}=\red{\dfrac{4}{10}}$

• $\sf \dfrac{2}{5}=\dfrac{2\cdot3}{5\cdot3}=\red{\dfrac{6}{15}}$

• $\sf \dfrac{2}{5}=\dfrac{2\cdot4}{5\cdot4}=\red{\dfrac{8}{20}}$

• $\sf \dfrac{2}{5}=\dfrac{2\cdot5}{5\cdot5}=\red{\dfrac{10}{25}}$

Letra B