a)13 + 2x = 3 2x=13-3 x=5 b)-7 = 5x + 1 5x=-7-1 x= -5/8 c)7x - 21 = 5x 2x=21 x=21/2 d)6y - 13 = -52 6y=-52+13 y=-13 e)4x - 4 = 3 4x=7 x=4/7 f)3x + 2 = -70 3x=-72 x=-24 g) 33 - 4x = 4x 8x=33 x=33/8 h) 5 - 10x = -2x -12x=5 x=-5/12
Oblicz x a)13 + 2x = 3 13 + 2x = 3 2x = 3-13 2x = -10 /2 x = 5 b)-7 = 5x + 1 -7 = 5x + 1 -8 = 5x /5 ⁸/₅ = x 1,6 = x c)7x - 21 = 5x 7x - 21 = 5x 2x = 21 / 2 x = 11½ d)6y - 13 = -52 6y - 13 = -52 6y = 39 /6 y = ³⁹/₆ y = 6½ e)4x - 4 = 3 4x - 4 = 3 4x = 7 /4 x = 1¾ f)3x + 2 = -70 3x + 2 = -70 3x = -72 /3 x = 24 g) 33 - 4x = 4x 33 - 4x = 4x 33 = 8x /8 4¹/₈ = x h) 5 - 10x = -2x 5 - 10x = -2x 5 = 8x /8 ⁵/₈ = x
a)2x=13-3 2x=10I:2 x=5 b)-5x=7+1I:(-1) 5x=-7-1 5x=-8I:5 X=⁸/₅ c)7x-5x=21 2x=21I:2 x=10,5 d)6x=-52+13 6x=-39I:6 x=-6⁵/₁₀ x=-6¹/₂ e)4x=4+3 4x=7I:4 x=⁷/₄ x=1³/₄ f)3x=-2-70 3x=-72I:3 x=-24 g)-4x-4x=-33 -8x=-33I:(-8) x=4¹/₈ h)-10x+2x=-5 -8x=-5I:(-8) x=⁵/₈
