Решите уравнение : 1/3х + 1 = - 1/4 ( х + 4/5)
1/3х + 1 = - 1/4(х + 4/5) 1/3х + 1 = - 1/4х - 4/20 1/3х + 1/4х = - 4/20 - 1 4/12х + 3/12х = - 1 1/5 7/12х = - 6/5 х = - 6/5 : 7/12 х = - 6/5 * 12/7 х = - 72/35 х = - 1 37/35