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16-02-2018
Mathematics

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Twice the difference of a number and 4 is equal to three times the sum of the number and 9. Find the number.

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mashpatatos mashpatatos

16-02-2018

Twice the difference of a number and four: 2(x - 4)three times the sum of the number and 2: 3(x + 2) 2(x - 4) = 3(x + 2)2x - 8 = 3x + 6-14 = x to confirm2[(-14) -4] = 2(-18) =-363 [(-14) +2] = 3 (-12) = -36

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