Question

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

Answer 1

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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Answer 2

Step-by-step explanation:

Solution :-

→ (-7)/(-10)

→ (7/10)

now, in order to make denominator as 30 ,

→ 30 / 10 = 3

Both numerator and denominator is multiplied by 3 or multiply fraction by 1 as 3/3 = 1 .

So,

→ (7/10) * (3/3)

→ (7 * 3)/(10 * 3)

→ (21/30) (Ans.)

[ Note :- we can write (21/30) as (-21)/(-30) also . ]