12. Solve for x. a) 를x-3=x+ 2 b) 쓰= c) (x +1) = (x – 3) x+5 2x-1 3 d) -5(x + 1) – 2(x + 1) = 3(2x – 1) e) 3(x + 2) – (2x – 1) = 4(3 – x)

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