Maths / Exponents and Power / Express as Rational Number

QUESTION

By what number should $\dpi{120} \fn_jvn \large \left ( \frac{1}{2} \right )^-^1$be multiplied so that the product may be equal to $\dpi{120} \fn_jvn \large \left (- \frac{4}{7} \right )^-^1$?

EXPLANATION
Explain TypeExplanation Content
Text

$\frac{-7}{8}$

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