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Mathematics
Lucille Wiggins
7 March, 13:17
Solve for x.
-x/2<-1
Enter the solution to the inequality in the box.
+3
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Darian Hogan
7 March, 13:36
0
I believe it is x>-2
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Moriah Rodriguez
7 March, 15:41
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You have to be awfully careful with this inequality. If can cause you all kinds of grief.
The easiest way to do this is to begin by dividing by - 1. What that does is turn the inequality
from (-x/2) < - 1 to
x / 2 > 1
The rule is when you divide by a negative, that turns the or the other way around ie > to <. You could actually show that happening.
Start with your given
- (x / 2) < - 1 Add 1 to both sides.
- (x / 2) + 1 < - 1 + 1 The 1 and - 1 cancel on the right.
- (x/2) + 1 < 0 Add x/2 to both sides
- (x/2) + x/2 + 1 < x/2 Add the like terms on the left.
1 < x/2 Which is exactly what we predicted would happen
Multiply by 2
2*1 < (x/2) * 2
2 < x
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