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1 15000 - x + 200 = 9 x
2 240 = x + 30
3 150 + x - 30 = 2 x + 10
4 - 600 - 2 x - 1400 = 40 - 5x + 400 - x
5 4x=800
6 x + 2 = 582
7 2 x - 400 = 400 + x + 26
8 x / 21 = 5
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