Final answer:
The student's question involves solving two different types of mathematical problems: equations involving fractions and an exponential equation. However, the examples provided do not precisely match the student's problems; therefore, no accurate solutions to the specific questions can be given.
Step-by-step explanation:
The student is asking about solving two separate mathematical problems. The first is to solve an equation involving fractions and the variable x, and the second is to solve an exponential equation. To solve the first equation, we must find a common denominator and combine the fractions accordingly. Unfortunately, a typo is present in the provided information, and it appears that the equation from the question is not amongst the examples given. Thus, I cannot provide further assistance on this part.
For the exponential equation, we're looking at the form 50 · 1.027x = 150. To solve this equation, we would typically take the natural logarithm of both sides and then isolate x to find its value. Again, an example formula equivalent to the student's problem is not present in the provided information.