Final answer:
The task is to convert a mixed algebraic expression into a fraction; however, the expression provided appears incomplete or incorrectly stated. Without further clarification or a specific value for 'a', the expression can only be simplified in algebraic terms, not computed numerically.
Step-by-step explanation:
To change the mixed expressions to fractions, we need to perform the appropriate arithmetic operations on the given terms and simplify the resulting fractions.
For the given expression 6a-4/7a-5-3, we would interpret it as:
- First, we need to identify if there are any typos or misinterpretations in the question.
- If the expression is correctly presented, then we need to understand that 'a' represents a variable, and we cannot compute a numeric value without knowing 'a'.
- If 'a' is known, we can simplify the expression by performing the subtraction.
- However, without a value for 'a', we can only express the subtraction in terms of 'a'.
- If there is a typo and the expression should represent a complete fraction, we would correct the expression accordingly and perform the simplification.
Note that there seems to be a potential typo or confusion in the provided question. It would be important to clarify the question with the student to ensure accurate assistance.
In general, simplifying algebraic expressions involves eliminating terms where possible, and checking the answer to ensure it is reasonable.