5x-7=8x+4= 3x+4=5x-6= 4+5x=x+12= x+1=3x-4= 6x+5=4+5= 1-7x=9-5x= 3x-2=2x+4= 2x+4=1+2x=

5x-7=8x+4= -3x= -11 | : -3 x= 3i 2/3 3x+4=5x-6= -2x= 10 | : -2 x=5 4+5x=x+12= 4x=8 | :4 x= 2 x+1=3x-4= 5= 4x | :4 x= 1 i 1/5 6x+5=4+5= 6x= 4 | :6 x= 1 i 2/6

5x-7=8x+4 5x - 8x = 4 + 7 -3x = 11 x = -3⅔ 3x+4=5x-6 3x - 5x = -6 - 4 -2x = -10 x = 5 4+5x=x+12 5x - x = 12 - 4 4x = 8 x=2 x+1=3x-4 x - 3x = -4 -1 -2x = -5 x = 2,5 6x+5=4+5 6x = 9 - 5 6x = 4 x = ⅔ 1-7x=9-5x -7x + 5x = 9 - 1 -2x = 8 x = -4 3x-2=2x+4 3x - 2x = 4 + 2 x = 6 2x+4=1+2x 4 = 1 sprzeczne