Помогите упростить выражение !!! 1)9x^3y^3/65m^7 *39x^4m^3/40y^5 *16y^2m^4/27x^7=. 2)52a^5/84b^10 : 39а/102b^2 :4a^3/45b^9=

1)) 1) 9х^3y^3/65m^7 * 39x^4m^3/40y^5 = 9x^3/5m^4 * 3x^4/40y^2 = 27x^7/200y^2m^4;2) 27x^7/200y^2m^4 * 16y^2m^4/27x^7 = 2/5;Ответ: 2/5.2)) 1) 52a^4/63b^8 : 39a/10b^2 = 52a^4/63b^8 * 10b^2/39a = 4a^4/42b^8 * 5/3 = 2a^4/21b^8 * 5/3 = 10a^4/63b^8;2) 10a^4/63b^8 : 4a^3/45b^9 = 10a^4/63b^8 * 45b^9/4a^3 = 5a/7 * 5b/2 = 25ab/14 = 1 11ab/14.Ответ: 1 11ab/14.