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19-10-2017
Mathematics

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1/5x-4 <-2/5x solve for x

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upandover upandover

19-10-2017

Multiply each side by 5:
1/5x * 5 - 4 * 5 < -2/5x * 5
Simplify:
x - 20 < -2x
Add 20 to each side:
x < 20 - 2x
Add 2x to each side:
3x < 20
Divide by 3:
x < 6 2/3

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