Question

Which of the following rational number is not equivalent; *

3/5, 27/45

4/7 , 16/28

8/9 , 64/81

None

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Answer 1

Answer:

3/5,27/45

Step-by-step explanation:

Is not equivalent

rational number

Answer 2

Answer:

For this question we have to find Which of the rational number is not equivalent in the given options.For that we should compare both rational numbers in each option. Answer: Option 3: 8/9 , 64/81

Step-by-step explanation:

From the given question,

• To find the equivalent fractions for any given fraction, both the numerator and the denominator  should multiply the by the same number.

Step 1:

• We shoud consider the first option => $\frac{3}{5}$ and $\frac{27}{45}$
• To find the this rational numbers are equal or not,we should simplify the second value.
• For that, consider $\frac{27}{45}$. Here we should divide by 9 on both numerator and denominator.

                   $\frac{27}{45}=\frac{3}{5}$    => ($3\times9=27$ and $5\times9=45$)

• So both values are equal.

Step 2:

• We shoud consider the second option => $\frac{4}{7}$ and $\frac{16}{28}$
• To find the this rational numbers are equal or not,we should simplify the second value.
• For that, consider $\frac{16}{28}$. Here we should divide by 4 on both numerator and denominator.
•                    $\frac{16}{28}=\frac{4}{7}$    => ($4\times4=16$ and $7\times4=28$)
• So both values are equal.

Step 3:

• We shoud consider the third option => $\frac{8}{9}$ and $\frac{64}{81}$
• To find the this rational numbers are equal or not,we should simplify the second value.
• Here cannot divide by the same number on both numerator and denominator.
• So both values are not equal.

Final Answer: Option 3: 8/9 , 64/81