5. Решите уравнение: (2x+1 7/18) : 1/3 = 8 1/3

Convert mixed numbers to improper fractions:
(2x + 25/18) : 1/3 = 25/3
Multiply both sides by 1/3:
2x + 25/18 = (25/3) * (1/3) = 25/9
Isolate the term with x:
2x = 25/9 - 25/18 = 50/18 - 25/18 = 25/18
Solve for x:
x = (25/18) / 2 = 25/36