How to transform and unify the multiplication and division of rational numbers? Be brief. It's just casual

The rational number a must be written as P / Q, and P / Q is an integer
Division is equivalent to multiplying by its reciprocal, such as B / a = b * (1 / a) = b * (Q / P)
It's unified with multiplication

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17. According to the meaning of power and the multiplication rule of fraction, we can get (B / a) &# 178; = B / a multiplied by B / a = B & # 178;; (B / a) &# 179; = B / a multiplied by B / A Multiply B / a = B & # 179 / / A & # 179;, the rule is the nth power of B / the nth power of A. according to the rule, calculate (- X / 3Y) &# 179; (C & # 178 / / AB) &# 178; × (A / BC) &# 179; (- C / A & # 178; b) &# 179;
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