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| Math Central | Quandaries & Queries |
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Question from Khadija, a parent: x/6 + 4/5 = x/9 |
Khadija,
I look at the denominators and see 6, 5, and 9 so I would multiply both sides of the equation by $6 \times 5 \times 9.$ What I get is
\[6 \times 5 \times 9 \times \frac{x}{6} + 6 \times 5 \times 9 \times \frac45 = 6 \times 5 \times 9 \times \frac{x}{9}\]
Cancellation yields
\[ 5 \times 9 \times x + 6 \times 9 \times 4 = 6 \times 5 \times x\]
Can you complete the problem? Write back if you need more assistance,
Penny
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