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Mathematics

Grade-7

Easy

Question

The standard form of $fraction numerator 55 over denominator negative 99 end fraction$ is _________.

$\frac{5}{9}$
$\frac{- 5}{9}$
$\frac{- 55}{99}$
$\frac{- 99}{55}$

hint Hint:

A rational number is in standard form when there are no common factors from the numerator and the denominator.

The correct answer is: $fraction numerator negative 5 over denominator 9 end fraction$

We are asked to find the standard form of $fraction numerator 55 over denominator negative 99 end fraction$ . In the given fraction 11 is a common factor. Factoring out 11, we get:
$fraction numerator 55 over denominator negative 99 end fraction equals fraction numerator 5 over denominator negative 9 end fraction$ .
Writing the negative sign on the numerator, we have: $fraction numerator negative 5 over denominator 9 end fraction$
Thus, the correct answer is option b.

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