a)(4-2X)-(X+3)=(X-5)-(-3-X) 4-2x-x-3=x-5+3+x -2x-x-x-x=-5+3+3-4 -5x=-3|:-5 x=3/5 b)(3-2x)+(3x+4)=-(3-2x)+(5x+4) 3-2x+3x+4=-3+2x+5x+4 -2x+3x-2x-5x=-3+4-3-4 -6x=-6|-6 x=1 c)-(x+3)+(2x-1)=(1+4x)+(3+x) -x-3+2x-1=1+4x+3+x -x+2x-4x-x=1+3+3+1 -4x=8|:-4 x=-2 d)-(X+3)-(2X+8)=(-3-2X)+(2X+1) -x-3-2x-8=-3-2x+2x+1 -x-2x+2x-2x=-3+1+3+8 -3x=9|:-3 x=-3
a) (4-2x)-(x+3) = (x-5)-(-3-x) 4-2x-x-3 = x-5+3+x 1-3x = 2x-2 /+2 3-3x = 2x /+3x 3 = 5x /:5 x = 0,6 spr: (4-2×0,6)-(0,6+3) = (0,6-5)-(-3-0,6) (4-1,2)-3,6 = -4,4-(-3,6) 2,8-3,6 = -4,4+3,6 -0,8 = -0,8 L=P b) (3-2x)+(3x+4) = -(3-2x)+(5x+4) 3-2x+3x+4 = -3+2x+5x+4 7+x = 1+7x /-x 7 = 1+6x /-1 6 = 6x /:6 x = 1 spr.: (3-2×1)+(3×1+4) = -(3-2×1)+(5×1+4) (3-2)+(3+4) = -(3-2)+(5+4) 1+7 = -1+9 8 = 8 L = P c) -(x+3)+(2x-1) = (1+4x)+(3+x) -x-3+2x-1 = 1+4x+3+x x-4 = 4+5x /-x -4 = 4+4x /-4 -8 = 4x /:4 x = -2 spr.: -(-2+3)+(2×(-2)-1) = (1+4×(-2))+(3+(-2)) -1+(-4-1) = (1+(-8))+1 -1+(-5) = -7+1 -6 = -6 L = P d) -(x+3)-(2x+8) = (-3-2x)+(2x+1) -x-3-2x-8 = -3-2x+2x+1 -3x-11 = -2 /+11 -3x = 9 /:(-3) x = -3 spr.: -(-3+3)-(2×(-3)+8) = (-3-2×(-3))+(2×(-3)+1) -(-6+8) = (-3-(-6))+(-6+1) 6-8 = (-3+6)+(-5) -2 = 3+(-5) -2 = -2 L = P
