Question

$15 \div 15(18 - 15 - 21) =$
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Answer 1

Answer:

$- \frac{1}{18}$

Step-by-step explanation:

$15 \div 15(18 - 15 - 21) \\ = 15 \div 15( - 18) \\ = 15 \div 15 \times ( - 18) \\ = 15 \times \frac{1}{15 \times ( - 18) } \\ = \frac{1}{ - 18 } \\ = - \frac{1}{18}$

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