\(a.40:x\times2=150:3\)
\(40:x\times2=50\)
\(x\times2=40:50\)
\(x\times2=\dfrac{4}{5}\)
\(x=\dfrac{4}{5}:2\)
\(x=\dfrac{2}{5}\)
`150 : (40:x xx 2)=3`
`40 : x xx 2= 150: 3`
`40 : x xx 2 = 50`
`40 : x =50: 2`
`40 : x = 25`
`x=40 : 25`
`x=40/25`
`x=8/5`
Vậy `x=8/5`
`150:(40:x xx2)=3`
`40:x xx2=150:3=50`
`40:x =50:2=25`
`x=40:25`
`x=8/5`
`150:(40:x×2)=3`
`=>40:x×2=150:3`
`=>40:x×2=50`
`=>40:x=50:2`
`=>40:x=25`
`=>x=40:25`
`=>x= 8/5`