QuestionAugust 27, 2025

3. Critique Reasoning Gwen says that the sum of -1(3)/(4) and 2(1)/(2) is the same as the difference between 2(1)/(2) and 1(3)/(4) Is Gwen correct?Explain why or why not.

3. Critique Reasoning Gwen says that the sum of -1(3)/(4) and 2(1)/(2) is the same as the difference between 2(1)/(2) and 1(3)/(4) Is Gwen correct?Explain why or why not.
3. Critique Reasoning Gwen says that the sum
of -1(3)/(4) and 2(1)/(2) is the same as the difference
between 2(1)/(2) and 1(3)/(4) Is Gwen correct?Explain
why or why not.

Solution
4.1(162 votes)

Answer

Gwen is correct. Explanation 1. Convert Mixed Numbers to Improper Fractions -1\frac{3}{4} = -\frac{7}{4} and 2\frac{1}{2} = \frac{5}{2}; 1\frac{3}{4} = \frac{7}{4}. 2. Calculate the Sum of -\frac{7}{4} and \frac{5}{2} Convert \frac{5}{2} to \frac{10}{4} for a common denominator. Sum: -\frac{7}{4} + \frac{10}{4} = \frac{3}{4}. 3. Calculate the Difference between \frac{5}{2} and \frac{7}{4} Convert \frac{5}{2} to \frac{10}{4} for a common denominator. Difference: \frac{10}{4} - \frac{7}{4} = \frac{3}{4}. 4. Compare Results Both calculations result in \frac{3}{4}.

Explanation

1. Convert Mixed Numbers to Improper Fractions<br /> $-1\frac{3}{4} = -\frac{7}{4}$ and $2\frac{1}{2} = \frac{5}{2}$; $1\frac{3}{4} = \frac{7}{4}$.<br /><br />2. Calculate the Sum of $-\frac{7}{4}$ and $\frac{5}{2}$<br /> Convert $\frac{5}{2}$ to $\frac{10}{4}$ for a common denominator. Sum: $-\frac{7}{4} + \frac{10}{4} = \frac{3}{4}$.<br /><br />3. Calculate the Difference between $\frac{5}{2}$ and $\frac{7}{4}$<br /> Convert $\frac{5}{2}$ to $\frac{10}{4}$ for a common denominator. Difference: $\frac{10}{4} - \frac{7}{4} = \frac{3}{4}$.<br /><br />4. Compare Results<br /> Both calculations result in $\frac{3}{4}$.
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