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6 + 2x = 5x + 9 , 6 - 9 = 5x - 2x , -3 = 3x , x = -1
2x + 4 = 10 2x = 10 - 4 = 6 2x = 6 x = 6/2 = 3
2x + 7 = 1 Therefore, 2x = -6 x = -6/2 x = -3
2x+4 = -16 2x = -16-4 2x = -20 x = -10
6 2(6) + 3 = 9