Question
Evaluate:
$\frac{7}{11}-\frac{-4}{-11}$
$\frac{7}{11}-\frac{-4}{-11}$
✓
Answer
$\frac{7}{11}-\frac{-4}{-11}$
$\frac{-4}{-11}=\frac{-4\times(-1)}{-11\times(-1)}=\frac{4}{11}$
$\therefore\frac{7}{11}-\frac{4}{11}$
$=\frac{7-4}{11}$
$=\frac{3}{11}$
$\frac{-4}{-11}=\frac{-4\times(-1)}{-11\times(-1)}=\frac{4}{11}$
$\therefore\frac{7}{11}-\frac{4}{11}$
$=\frac{7-4}{11}$
$=\frac{3}{11}$
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