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