Question

\(\frac{10}{a}=\frac{20}{10}\) Tìm a

Answer 1

\(\frac{10}{a}\)= \(\frac{20}{10}\)

=> a = \(\frac{10\cdot10}{20}\)

=> a = 5 ( Lưu ý . là dấu nhân nhé ) 

Answer 2

a=5 nha bạn

Answer 3

a=(10x10):20

a=1

Answer 4

a= 5 nha bạn

Answer 5

=>10x10=ax20

=>100=20a

=>100:20=a

=>5=a

vậy....

Answer 6

\(hay\frac{10}{a}=\frac{10}{5}.\)

Suy ra a=5

Answer 7

\(\frac{10}{a}=\frac{20}{10}\)\(\Rightarrow20:10=2\)

Vậy \(\Rightarrow10:2=5\)

\(a=5\)

Answer 8

\(\frac{10}{a}\)= \(\frac{20}{10}\)

\(\frac{10}{a}\)=\(\frac{10}{5}\)

a = 5

Answer 9

A = 5 nha