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# x is an integer Watch

1. list all the values of x such that-1<2x<8
the <8 has a line under it btw
how do you work this out? i know how to do it for just x by itself but not 2x
2. Oh look, it's the troll again ^.^ Hi!
3. (Original post by p29)
list all the values of x such that-1<2x<8
the <8 has a line under it btw
how do you work this out? i know how to do it for just x by itself but not 2x
just divide every term by 2 and you're done

Edit: oh, a troll
4. (Original post by p29)
list all the values of x such that-1<2x<8
the <8 has a line under it btw
how do you work this out? i know how to do it for just x by itself but not 2x

or you could sketch from the points y = -1 and y = 8 and find the x values in that range...
5. lol im famous
6. im not trolling btw
7. (Original post by DylanJ42)
just divide every term by 2 and you're done

Edit: oh, a troll
so i work out what only x is and then divide every result by 2?
8. X is a letter, silly.
9. (Original post by p29)
im not trolling btw
After that double negative nonsense it is hard to take you seriously. No offense.
10. (Original post by RDKGames)
After that double negative nonsense it is hard to take you seriously. No offense.
11. (Original post by p29)
Anyway Naruke has given the correct answer above: -1/2 < x <= 4. (The "line under it" makes it greater than or equal to).
Regarding double negatives: 1 + -1 = 0 by the definition of 0, so -1 * (1 + -1) = 0 by multiplying both sides by -1.
Now expand the bracket: -1*1 + -1*-1 = 0, and evaluate -1*1 to give -1 + -1*-1 = 0. Now add 1 to both sides to give -1*-1 = 1, as required. It's not difficult to understand.

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