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① 2 (2x-1) + 5 (2x-1) = 3 (x + 1) + 4 (x + 1) 7 (2x-1) = 7 (x + 1) 2x-1 = x + 1 x = 2 ② 4x-2-4x-4 = 3x + 3-10x + 5 - 6 = - 7x + 8 7x = 14 x = 2
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