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Kaylane
a) x/5 = 21/35 b) 10/7 = 50/x c) 1/7 = x-6/49 d) 5x+3/10 = -21/30 e) 5/x+4 = 30/54 f) 0,9/x = -18/27 g) 7x+5/4 = 2x/3/4
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