Gujarat BoardEnglish MediumSTD 7MATHSRational Numbers2 Marks
Question
Find a rational number exactly halfway between. $\frac{5}{-13}$ and $\frac{-7}{9}$
✓
Answer
We know that, a rational number, which is haifway between two rational number i.e.
$a$ and $b =\frac{\text{a}+\text{b}}{2}.$
Given rational numbers are $\frac{-1}{3}$ and $\frac{1}{3}.$
Hence, $\text{a} =-\frac{1}{3}$ and $\text{b}=\frac{1}{3}$
$\therefore\frac{\text{a}+\text{b}}{2}=\frac{\frac{1}{3}+\frac{1}{3}}{2}=\frac{0}{2}=0$
Hecne, the exaclty halfway betweenm $-\frac{1}{3}$ and $\frac{1}{3}$ is $0\ ($zero$).$
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