Решите уравнение.
3(х-4 целых 1/3)+1 целая 1/6=-3,5=

3(x - 4  1/3) + 1  1/6 = - 3.5
3(x - 13/3) + 1  1/6 = -3.5
3x - 13 + 1  1/6 = -3.5
3x + 1  1/6 = -3.5 + 13 
3x + 1  1/6 = 9.5
3x + 7/6  = 9.5 | *6
18x + 7 = 57
18x = 50
x = 50/18
x = 2   14/18
x = 2  7/9