\(x-\dfrac{3}{5}=\dfrac{-7}{2}\\ x=\dfrac{-7}{2}+\dfrac{3}{5}\\ x=\dfrac{-29}{10}\\ Vậyx=\dfrac{-29}{10}\)
b,\(\left(x-\dfrac{3}{5}\right):\dfrac{-1}{3}=0,4\\ x-\dfrac{3}{5}=\dfrac{2}{5}.\dfrac{-1}{3}\\ x-\dfrac{3}{5}=\dfrac{-2}{15}\\ x=\dfrac{-2}{15}+\dfrac{3}{5}\\ x=\dfrac{7}{15}\\ Vậyx=\dfrac{7}{15}\)
a: x=-7/2+3/5=-3,5+0,6=-2,9
b: =>x-3/5=2/5*-1/3=-2/15
=>x=-2/15+3/5=-2/15+9/15=7/15
`x-3/5=-7/2`
`x=-7/2+3/5`
`x=-29/10`
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`(x-3/5):-1/3=0,4`
`x-3/5=0,4``.``-1/3`
`x-3/5=-2/15`
`x=-2/15+3/5`
`x=7/15`