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- 3 le 4 - (7x)/(2) le 10...

`- 3 le 4 - (7x)/(2) le 10`

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`- 3 le 4 - (7x)/(2) le 10`
`rArr -3 -4 le (-7x)/(2) le 18 -4`
`rArr -7 le (-7x)/(2) le 14`
`rArr -14 le - 7x le 28`
`rArr 2ge x ge - 4 `
`rArr - 4 le x le 2`
`:. x in [- 4 , 2] `
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