(3a^2)/2+(4b)/3-(6ab)/5

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(3a^2)/2+(4b)/3-(6ab)/5

(3a^2)/2+(4b)/3-(6ab)/5
(3a^2)/2+(4b)/3-(6ab)/5

(3a^2)/2+(4b)/3-(6ab)/5
原式=(45a²+40b-36ab)/30