51 point
What is the difference of $\frac{5}{7}-\frac{3}{28}$ in lowest terms?
a. $\frac{23}{32}$
c. $\frac{8}{14}$
b. $\frac{17}{28}$
d. $\frac{4}{7}$
The answer is choose your answer...

Answer

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Answer

The difference of $\frac{5}{7}-\frac{3}{28}$ in lowest terms is $\boxed{\frac{17}{28}}$. So, the correct answer is (b).

Steps

Step 1 ：To solve this problem, we need to subtract the two fractions. However, before we can do that, we need to find a common denominator.

Step 2 ：The least common multiple of 7 and 28 is 28.

Step 3 ：So, we will convert $\frac{5}{7}$ to $\frac{20}{28}$ and subtract $\frac{3}{28}$ from it.

Step 4 ：The difference of $\frac{5}{7}-\frac{3}{28}$ in lowest terms is $\boxed{\frac{17}{28}}$. So, the correct answer is (b).