ezriana13 ezriana13

30-08-2017
Mathematics

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the difference of 3 times a number and 20 is greater then 10

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coolstick coolstick

30-08-2017

If the number is x, then 3 times x -20 >10 and 3x-20>10. Adding 20 to both sides, we get 3x >30 and by dividing by 3 we get x >10

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