25m-3=24m-4 17y+28=19y+27

25m - 3 = 24m - 4 25m - 24m = -4 + 3 m = -1 17y + 28 = 19y + 27 17y - 19y = 27 - 28 -2y = -1 |: (-2) y = 1/2 powinno być dobrze.. :)

25m-3=24m-4 /+3 25m=24m-1/-24m 1m=-1 m=-1 17y+28=19y+27/-19y -2y+28=27/-28 -2y=-1/:(-2) y= 1/2

25m-3=24m-4 m=-4+3 m=-1 17y+28=19y+27 -2y=27-28 -2y=-1/;-2 y=½