Question

tim cac so tu nhien a,b biet : 6/a = 9/15

 

Answer 1

Ta có 9/15 = 3/5 = 6/10 Vậy a = 10
 

Answer 2

Ta có :9/ 15 = 3/5 = 6/ 10

Vì 6/a = 6/10

Nên a = 10

 

Answer 3

\(\frac{6}{a}=\frac{9}{15}\)

\(\Rightarrow6.15=a.9\)

\(\Rightarrow a.9=6.15\)

\(\Rightarrow a.9=90\)

\(\Rightarrow a=90:9\)

\(\Rightarrow a=10\)