whatevers whatevers

30-09-2016
Mathematics

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will someone help -2x-1>-21 or 2x+7>37

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texaschic101 texaschic101

30-09-2016

-2x - 1 > - 21
-2x > -21 + 1
-2x > -20
x < -20/-2
x < 10

2x + 7 > 37
2x > 37 - 7
2x > 30
x > 30/2
x > 15

solution : x < 10 , x > 15
graphed : open circle on 10, shaded to the left : open circle on 15,shaded to the right.

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