Question

  giúp mik với mik cần gấp

 

Answer 1

`@` `\text {Ans}`

`\downarrow`

\(a,\)

\(0,7\cdot2\dfrac{2}{3}\cdot20\cdot0,375\)

`=`\(\left(0,7\cdot20\right)\cdot\left(2\dfrac{2}{3}\cdot0,375\right)\)

`=`\(14\cdot\left(\dfrac{8}{3}\cdot\dfrac{3}{8}\right)\)

`=`\(14\cdot1=14\)