Question

Express

7
__

4

as a rational number with denominator 21 and -35.​

Answer 1

Answer:

$\frac{7}{4} \\ \\ \frac{7 \times 3}{4 \times 3} = \frac{21}{12} \\ \\ \frac{7 \times - 5}{4 \times - 5} = \frac{ - 35}{ - 20}$

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