Evaluate: 7c^{-1}y^{-3}

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Expression: $7{c}^{-1}{y}^{-3}$

Any expression raised to the power of $-1$ equals its reciprocal

$7 \times \frac{ 1 }{ c } \times {y}^{-3}$

Express with a positive exponent using ${a}^{-n}=\frac{ 1 }{ {a}^{n} }$

$7 \times \frac{ 1 }{ c } \times \frac{ 1 }{ {y}^{3} }$

Calculate the product

$\frac{ 7 }{ c{y}^{3} }$

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