Rozwiąż równania. a) 7 - 3x = 8 b) 2 + 4x = 11 - 2x c) 1 - 5x = 5x - 4 d) 2 + 3x = 11 - 3x e) -3,5 - 4x = 1/2

a) 7 - 3x = 8 -3x=1 /:-3 x=-⅓ b) 2 + 4x = 11 - 2x 6x=9 /:6 x=⁹/₆ x=1½ c) 1 - 5x = 5x - 4 -5x=5x-3 -10x=-3 /:-10 x=0,3 d) 2 + 3x = 11 - 3x 6x=9 /:6 x=1½ e) -3,5 - 4x = 1/2 -4x=4 /:-4 x=1

a 7-3x=8 3x=8-7 3x=1 x=1/3 b 2+4x=11-2x 4x+2x=11-2 6x=9 x=1,5 c 1-5x=5x-4 -5x-5x=-4-1 -10x=-5 x=0,5 d 2+3x=11-3x 3x+3x=11-2 6x=9 x=1,5 e -3,5 - 4x = 1/2 -4x=1/2+3,5 -4x=4 x=-1

7-3x =8 | +3x 7 = 8 +3x | -8 -1 = 3x |:3 -1/3 = x x=-1/3 2+4x = 11-2x | +2x 2 +6x = 11 |-2 6x = 9 | :6 x = 1,5 1 - 5x = 5x - 4 | +5x 1 = 10x - 4 | +4 5 = 10x |:10 0,5 = x x=0,5 2 + 3x = 11 - 3x | +3x 2 +6x = 11 | -2 6x = 9 | :6 x = 1,5 -3,5 - 4x = 1/2 |+3,5 -4x = 4 | : (-4) x = -1