(9a²b^3/14x^3y²)÷(3a^3b²/49x^3y^3) 数学分式乘除法章节 伴你学数学题

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(9a²b^3/14x^3y²)÷(3a^3b²/49x^3y^3) 数学分式乘除法章节 伴你学数学题
(9a²b^3/14x^3y²)÷(3a^3b²/49x^3y^3)
亲们救救我这个计算无能的孩纸吧

(9a²b^3/14x^3y²)÷(3a^3b²/49x^3y^3) =[(9a²b^3)/(14x^3y²)]÷[(3a^3b²)/(49x^3y^3) ]=[(9a²b^3)/(14x^3y²)]×[(49x^3y^3)/(3a^3b²) =(21by)/(2a)