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anonymous

  • 4 years ago

-7<x+2<4

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  1. anonymous
    • 4 years ago
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    -7-2<x+2-2<4-2 -9<x<2

  2. anonymous
    • 4 years ago
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    ok so since the middle 2 was a pos i added to to the -7 and sub from the ps 4 right?

  3. anonymous
    • 4 years ago
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    yes, what we try to do here is to leave the "X" alone, if it has a number added to it, we subtract, if it's divided, we multiply, and apply any operation to the other sides in the inquality

  4. anonymous
    • 4 years ago
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    ok so my next on is x+8<3 and x9>-4 so i am thinking my answer is -5<x<5 ?

  5. anonymous
    • 4 years ago
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    x+8-8<3-8 x<-5 but what about the second part?

  6. anonymous
    • 4 years ago
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    ok you would subtract the -4 from 9 to get x<5

  7. anonymous
    • 4 years ago
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    it was written x9>-4, not x+9>-4, x9 means x multiplied by 9

  8. anonymous
    • 4 years ago
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    i c thats what confusses me so what do i multiply the x with the 9 or the 9 and 4

  9. anonymous
    • 4 years ago
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    for this case, x9>-4, we divide x9 by 9 to get x, and divide the other part of the inequality by 9, so we get x>(-4/9) PS: we usually write 9x, not x9

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