Question 155647
1. 3/x = 7/5
7X=15
X=15/7 ANSWER.

2.5a^2b/12a multiplied by 2a^3b/15ab^6
(5A^2B/12A)(2A^3B/15AB^6)
(5A^2B)(2A^3B)/(12A)(15AB^6)
10A^5B^2/180A^2B^6
A^3/18B^4 ANSWER.