Rozwiąż równanie. a) 3x + 7 = 2x + 1 b)x = 8- 3x c) 2x - 4 = 4x - 2 d) 7 - 2x = 5x + 28 e) 8x - 5 = 9x - 5 f) 6x + 2x - 10 = 3x + 5 g) x + 2x + 3x = 5 + 6 + 7 h) 4x - 1 + 5x = 6x + 1 - 7x i) 0 = 4x - 4 + 5x - 5

a) 3x + 7 = 2x + 1 3x - 2x = 1 - 6 x = -5 b)x = 8- 3x x +3x = 8 x = 2 c) 2x - 4 = 4x - 2 2x - 4x = -2 + 4 -2x = 2 x = -1 d) 7 - 2x = 5x + 28 -2x - 5x = 28 - 7 - 7x = 21 x = -3 e) 8x - 5 = 9x - 5 8x - 9x = -5 + 5 -x = 0 x = 0 f) 6x + 2x - 10 = 3x + 5 8x - 3x = 5 + 10 5x = 15 x = 3 g) x + 2x + 3x = 5 + 6 + 7 6x = 18 x = 3 h) 4x - 1 + 5x = 6x + 1 - 7x 9x + x = 1 + 1 10x = 2 x = 2/10 = 1/5 i) 0 = 4x - 4 + 5x - 5 -9x = -9 x = 1