(a) 2+(3X-4) + 5 x (b) -(3X-4) + 6 +(2x-1) ( C ) - ( 2x - 1 - 2 x + y) (d) - ( 2 X - 1 ) -(4 X - 5 )+ 6 x ( e) 3x +4 ) -(2X - (3x - 1 (+ 4)

a)2+3x-4+5x=8x-2 b)-(3X-4) + 6 +(2x-1) =-3x+4+6+2x-1=-x+9 c)- ( 2x - 1 - 2 x + y)=1-y d)- ( 2 X - 1 ) -(4 X - 5 )+ 6 x =6

a) 2+3x-4+5x = 0 3x+5x=-2+4 8x = 2 /:8 x = 0,25 b) -(3x-4) + 6 + (2x-1) = -3x+4+6+2x-1=0 -3x+2x=-4-6+1 -1x = -9 /:-1 x=9 c) -(2x-1-2x+y) = -2x+1+2x-y = 0 -y = -1 /:-1 y=1 d) -(2x-1) - (4x-5) +6x = -2x+1-4x+5+6x = 0 -2x-4x+6x=-1-5 0x=-6 Nie ma rozwiązania e) (3x+4) - (2x - (3x-1) +4) = 3x+4 - (2x-3x+1+4) = 3x+4 - 2x+3x-1-4 = 0 3x-2x+3x=-4+1+4 4x=1 /:4 x=0,25