通分:(1)3y分之x与2y²分之3x / (2)a²b分之6c与3ab²分之c/(3)2x+2y分之x-y与(x+y)²分之xy (4)4m²-9分之2mn
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![通分:(1)3y分之x与2y²分之3x / (2)a²b分之6c与3ab²分之c/(3)2x+2y分之x-y与(x+y)²分之xy (4)4m²-9分之2mn](/uploads/image/z/813215-47-5.jpg?t=%E9%80%9A%E5%88%86%EF%BC%9A%281%293y%E5%88%86%E4%B9%8Bx%E4%B8%8E2y%26%23178%3B%E5%88%86%E4%B9%8B3x+%2F+%282%29a%26%23178%3Bb%E5%88%86%E4%B9%8B6c%E4%B8%8E3ab%26%23178%3B%E5%88%86%E4%B9%8Bc%2F%283%292x%2B2y%E5%88%86%E4%B9%8Bx-y%E4%B8%8E%EF%BC%88x%2By%29%26%23178%3B%E5%88%86%E4%B9%8Bxy+%284%294m%26%23178%3B-9%E5%88%86%E4%B9%8B2mn)
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通分:(1)3y分之x与2y²分之3x / (2)a²b分之6c与3ab²分之c/(3)2x+2y分之x-y与(x+y)²分之xy (4)4m²-9分之2mn
通分:(1)3y分之x与2y²分之3x / (2)a²b分之6c与3ab²分之c/
(3)2x+2y分之x-y与(x+y)²分之xy (4)4m²-9分之2mn
通分:(1)3y分之x与2y²分之3x / (2)a²b分之6c与3ab²分之c/(3)2x+2y分之x-y与(x+y)²分之xy (4)4m²-9分之2mn
(1)3y分之x,分子分母同乘2y,得2xy/6y².2y²分之3x ,分子分母同乘3,得9x/6y².
(2)a²b分之6c,分子分母同乘3b,得6bc/3a²b².3ab²分之c,分子分母同乘a,得6bc/ac.
(3)2x+2y分之x-y,分子分母同乘(x+y),得(x²-y²)/2(x+y)².(x+y)²分之xy,分子分母同乘2,得2xy/2(x+y)².
(4)只有一个,没法通分
(1)6y²分之2xy与6y²分之9xy