Question

tìm x biết 15/16 x X =9/40

Answer 1

`@` `\text {Ans}`

`\downarrow`

`15/16 \times x = 9/40`

`=> x = 9/40 \div 15/16`

`=> x=9/40 \times 16/15`

`=> x = 6/25`

Vậy, `x=6/25.`

Answer 2

\(\dfrac{15}{16}\times x=\dfrac{9}{40}\\ x=\dfrac{9}{40}:\dfrac{15}{16}\\ x=\dfrac{9}{40}\cdot\dfrac{16}{15}\\ x=\dfrac{144}{600}\\ x=\dfrac{6}{25}\)

Answer 3

\(\Rightarrow x=\dfrac{9}{40}:\dfrac{15}{16}=\dfrac{3.3.4.4}{4.10.3.5}=\dfrac{12}{50}=\dfrac{6}{25}\)