Question

tìm x;y biết :

x+y=x:y=3.(x-y)

Answer 1

x+y=3(x+y) 》x+y=3x+3y 》y+3y=3x-x 》4y=2x 》2y=x 》x÷y=2 . x+y=x÷y》x+y=2 . Ta co x+y =2 va x÷y =2 roi thi se suy ra x=4/3 va y=2/3

Answer 2

3(x-y) mà Nguyen Ngoc Vy Phuong