5/8x+0,57=7/12x-1,43
5/8 х + 0,57 = 7/12 х - 1,43 5/8 х - 7/12 х = -1,43 - 0,57 15/24 х - 14/24 х = - 2,0 1/24 х = - 2,0 х = -2,0 * 24 х = - 48