Final answer:
The solution involves following steps of inverting a negative exponent, multiplying coefficients and variables, and then subtracting the exponents of like variables. Unfortunately, the question contains typos or errors that prevent providing a complete solution.
Step-by-step explanation:
The question requires simplifying a complex algebraic expression by applying rules of exponents and division. We are given the expression (1/x-5y4)-2 × 14x4y3 divided by 7x6y8. When dividing expressions with exponents, we subtract the exponents of like bases. The steps to simplify the expression are as follows:
- Invert the exponent by changing the negative exponent to positive and switch numerator with the denominator.
- Multiply the coefficients (numerical terms) and the variables separately.
- Subtract the exponents of like variables when dividing.
However, due to the inconsistencies and fragmentation in the question provided, a clear step-by-step solution cannot be given without the correct expression being fully and accurately stated.