Question
Express $\frac{-42}{98}$ as a rational number with denominator $7.$
✓
Answer
$98 = 7 \times 14$
$\therefore\frac{-42}{98}=\frac{-42\div14}{98\div14} ($Dividing the numerator and denominator by $14)$
$=\frac{-3}{7}$
$\therefore\frac{-42}{98}=\frac{-42\div14}{98\div14} ($Dividing the numerator and denominator by $14)$
$=\frac{-3}{7}$
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