Question

"-7/-10" can be expressed with a rational number with denominator 30 as

Answer 1

-7/-10

= -7 × -3/-10×-3( since minus multiplied by minus is plus)

= 21/30

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Answer 2

SOLUTION

TO DETERMINE

- 7/ - 10 can be expressed with a rational number with denominator 30 as

EVALUATION

Here the given rational number is

$\sf \: \dfrac{ - 7}{ - 10}$

Which can be simplified as

$\sf \: \dfrac{ - 7}{ - 10}$

$\sf \: = \dfrac{ 7}{ 10}$

Numerator = 7

Denominator = 10

In order to express as a rational number with denominator as 30 we multiply both of the numerator and denominator by 3

Then we get

$\sf \: \dfrac{ - 7}{ - 10}$

$\sf \: = \dfrac{ 7}{ 10}$

$\sf \: = \dfrac{ 7 \times 3}{ 10 \times 3}$

$\sf \: = \dfrac{21}{30}$

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