Question
Evaluate: $\frac{-8}{9}+-\frac{5}{12}$
✓
Answer
$\frac{-8}{9}+-\frac{5}{12}$
$\text{LCM}$ of $9,12$
$=2 \times 2 \times 3 \times 3=36$
$=\frac{-8 \times 4}{9 \times 4}-\frac{5 \times 3}{12 \times 3}$
$ =\frac{-32-15}{36} \quad(\text { LCM of } 9 \text { and } 12=36)$
$ =\frac{-47}{36}$
| $2$ | $9, 12$ |
| $2$ | $9, 6$ |
| $3$ | $9, 3$ |
| $3$ | $3, 1$ |
| $1, 1$ |
$=2 \times 2 \times 3 \times 3=36$
$=\frac{-8 \times 4}{9 \times 4}-\frac{5 \times 3}{12 \times 3}$
$ =\frac{-32-15}{36} \quad(\text { LCM of } 9 \text { and } 12=36)$
$ =\frac{-47}{36}$
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