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Rational Numbers — MATHS STD 7 — Question

Gujarat BoardEnglish MediumSTD 7MATHSRational Numbers1 Mark
Question
Express $\frac{3}{4}$ as a rational number with denominator: $-80$
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Answer

To make the denominator $-80,$ we have to multiply numerator and denominator by $-20.$
$\therefore\frac{{3}\times(-20)}{4\times(-20)}=\frac{-60}{-80}$

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