nick4996 nick4996

16-09-2019
Mathematics

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Nine less than a number is no more than 8 and is no less than 3

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a5904640 a5904640

16-09-2019

9 - x < 8 => -x < 8 - 9 => -x < -1 => x > 1

9 - x > 3 => -x > 3 -9 => -x > -6 => x < 6

So the number is between 1 and 6, notation 1 < x < 6

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