Question

Monica

求解急謝謝

已各 (xy) 2
(D z:?

(2) (3十攻) (9
(3) 之: 2

Answer 1

訪客

3（x-y)=2（x+y)
x=5y
1. x:y=5:1
2.x+5y=2x
9x-5y=8x
答案=2：8
3. x=5y y=x/5
5y*=5×(x/5)* =x*/5
　答案=5：1