(-2a^2b^3)÷(-ab^2)×（-3a^2b)

(ab(a^-2ab)-a^2b(a-3b))÷（3a^b） (a^2b-ab-a+1)/(ab^2+3ab-b-3)÷(a^2+a_2)/(b^2+b-6) (a-b)^3+2ab(a-b) (-a^2b^2)÷(-ab^2)×(-3ab^3) (-a^2b^2)÷(-ab^2)*(-3ab^3) 已知a+b=3ab,求代数式(5a+ab+5b)÷(a-2ab+b)的值. ab/a+b=3 a-2ab+b/2a-3ab+2b? a^2-3ab+b^2/ab=( )/ab-3 a^2-3ab+b^2/ab=( )/ab -3 a^2b-ab+2ab^2-5a^b-4ab+3ab^2化简快 a+b/2ab 2AB/A+B a+b/2ab ab^3+b^2+b-a+1 -ab(a^2b^5-ab^3-b) [(2b/a^2-b^2)+(a/a^2+ab)]÷3/a-b (a-b/ab)^2•(b-a/-a)^-3÷1/(a^2-b^2) -5a(a^2b-ab^2)÷ab