Question
Evaluate: $-3-\frac{4}{7}$
✓
Answer
$-3-\frac{4}{7}$ $=\frac{-3}{1}-\frac{4}{7}$ $LCM$ of $1$ and $7 = 7$
$\therefore\frac{-3}{1}=\frac{-3\times7}{1\times7}=\frac{-21}{7}$
$\therefore\frac{-21}{7}-\frac{4}{7}$
$=\frac{-21-4}{7}$ $=\frac{-25}{7}$
$\therefore\frac{-3}{1}=\frac{-3\times7}{1\times7}=\frac{-21}{7}$
$\therefore\frac{-21}{7}-\frac{4}{7}$
$=\frac{-21-4}{7}$ $=\frac{-25}{7}$
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