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6. Rezolvați ecuaţiile: a) x+5 1 2x+7 + = 1 2 2 b) 11x-4 +17x=6-x -4 2 c) *-4---4+ 3 = 2x-1 6 5 2 10 d) 13x + 1+3x =2x-1 4​