19. (6 + 5 1/3)/(6 - 5 1/3) =

Answer: D

Explanation:

17

The expression (6 + 5 1/3)/(6 - 5 1/3) simplifies to 17 when calculated correctly. This involves first converting the mixed number into an improper fraction and then performing the arithmetic operations.

A) 131

Option A is incorrect because it does not reflect the simplified result of the expression. The calculations yield a much smaller value than 131 when the fractions are properly handled.

B) 531

Option B is also incorrect as it suggests a significantly larger number than what is derived from the operations. The simplification of the expression leads to a result that is far less than 531.

C) 16

Option C is incorrect. Although 16 is a reasonable guess, it does not align with the correct calculations of the expression. The result is actually higher than 16 when the addition and subtraction of the fractions are accurately computed.

D) 17

Option D is correct as it accurately reflects the result of the entire expression (6 + 5 1/3)/(6 - 5 1/3) after performing the necessary calculations. This choice is confirmed through the correct simplification of the fractions involved.

Conclusion

The correct answer is 17, as it accurately represents the solution to the expression provided. All other options fail to correspond to the calculated value, highlighting the importance of careful arithmetic in solving such problems.