Question

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

Answer 1

Step-by-step explanation:

$\frac{ - 7}{ - 10} = \frac{7}{10}$

negative sign will cut negative

now multiple by 3

because 3×10 is 30

$\frac{7}{10} \times \frac{3}{3} = \frac{21}{30}$

answer will be

$\frac{21}{30} \: and \: \frac{ - 21}{ - 30}$

hope it helps

Answer 2

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 . ]

Learn more :-

let a and b positive integers such that 90 less than a+b less than 99 and 0.9 less than a/b less than 0.91. Find ab/46

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