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3 -4q = 10q + 10 3 - 10 = 10q + 4q -7 = 14q q = -1/2
9q - 14 + 3q - 8 = 7 So 9q + 3q = 7 + 14 + 8 ie 12q = 29 so q = 29/12 = 2.41666..
7 + 5 + 4 ÷ 2 + 7 = 21
5 + 2 + 3 + 7 + (21/7) = 20
2 + 12 + 7 = 21