x+2/7 = x-1 /-kreska ułamkowa 2x+4/12 = x-2/3 x+5/12 = x-1/3

x+2/7 = x-1 x+2=7x-7 x-7x=-7-2 -6x=-9 x=1,5 2x+4/12 = x-2/3 6x+12=12x-24 6x-12x=-24-12 -6x=-36 x=6 x+5/12 = x-1/3 3x+15=12x-12 3x-12x=-12-15 -9x=-27 x=3