Question

complete as lacunas para tornar as frações equivalentes
a)3-4 = ×-36

b)7-1= ×-42

c)9-14=×-84=27-× =

d)2-10=×-5=4-×=​

Answer 1

Resposta:

Explicação passo-a-passo:

$a)\dfrac{3}{4}=\dfrac{x}{36}\\4\times x=3\times 36\\4x=108\\x=\dfrac{108}{4}\\x=27\\\\b)\dfrac{7}{1}=\dfrac{x}{42}\\1\times x=7\times 42\\x=294\\\\c)\dfrac{9}{14}=\dfrac{x}{84}\\14\times x=9\times 84\\14x=756\\x=\dfrac{756}{14}\\x=54\\\\d)\dfrac{2}{10}=\dfrac{x}{5}\\10\times x=2\times 5\\10x=10\\x=\dfrac{10}{10}\\x=1$

Answer 2

Resposta:

a)27/36

b)42/90

c)54/84 e 27/42

d)1/5 e 4/20

Explicação passo-a-passo: