Решить уравнение : 12×(1,3/4Х+5/8)=-6,1/2

12 * (1 3/4х + 5/8) = - 6 1/2 1 3/4х + 5/8 = - 6 1/2 : 12 7/4х + 5/8 = -13/2 * 1/12 7/4х + 5/8 = - 13/24 7/4х = - 13/24 - 5/8 7/4х = - 13/24 - 15/24 7/4х = - 28/24 х = - 28/24 : 7/4 х = - 28/24 * 4/7 х = - 28*4/24*7 х = - 4*4/24 х = - 16/24 х = - 2/3 проверка: 12 * (1 3/4 * (- 2/3) + 5/8) = - 6 1/2 12 * (- 7/4 * 2/3 + 5/8) = - 13/2 12 * (- 14/12 + 5/8) = - 13/2 12 * (- 84/72 + 45/72) = - 13/2 12 * (- 39/72) = - 13/2 - 39*12/72 = - 13/2 - 39/6 = - 13/2 - 13/2 = - 13/2