`-5/7(3/5-x+1 3/2)=|4/35-19/70|`
`⇒ -5/7(3/5 - x + (1 × 2 + 3)/2) = |4/35-19/70|`
`⇒ -5/7(3/5 - x + 5/2) = |4/35-19/70|`
`⇒ -5/7(31/10 - x) = |4/35-19/70|`
`⇒ -5/7(31/10 - x) = |-11/70|`
`⇒ -5/7(31/10 - x) =11/70`
`⇒ -(5(31/10 - x))/7 = 11/70`
`⇒ -5(31/10 - x) = 11/70 × 7`
`⇒ -5(31/10 - x) = 77/70`
`⇒ -5(31/10 - x) = 11/10`
`⇒ 31/10 - x = -(11/10)/5`
`⇒ 31/10 - x = -11/50`
`⇒ -x = -11/50 - 31/10`
`⇒ -x = -83/25`
`→ x = 83/25`
Vậy `x = 83/25`.
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@Drew McIntyre
