Find x + 1/x if 3x + 2x - 4 = 2(x + 9) - (7 - x)
Find x first, then the other will be easy. 3x + 2x – 4 = 2(x + 9) – (7 – x)
3x + 2x – 4 – 2(x + 9) + (7 – x) = 0
3x + 2x – 2x – x – 4 – 18 + 7 = 0
2x – 15 = 0 ——> x = 15/2
Find x + 1/x 15 1 15 2 225 4 229
––– + ––– = ––– + ––– = ––– + ––– = –––
2 15/2 2 15 30 30 30
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