gissie4500 gissie4500

21-09-2016
Mathematics

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Twice the diffrence of a number and 9 is equal to three times the sum of the number and 5. Find the number

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texaschic101 texaschic101

21-09-2016

2(n-9) = 3(n + 5)
2n - 18 = 3n + 15
2n - 3n = 15 + 18
-n = 33
n = -33

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