5x-7=9x+17 ??????????? ???????????
5х-7=9х+17 5х-9х=7+17 -4х=24 х=24:(-4) х= -6
5x - 7 = 9x+ 17 5x - 9x = 17 + 7 - 4x = 24 4x = - 24 x = - 6