Question

From the sum of x+3y and -3x-y substracy x-y​

Answer 1

Answer

Step-by-step explanation:

x + 3y + ( -3x -y )

x + 3y -3x - y

-2x +2y = 0 ---------- 1

x -y = 0---------------2

multiply equ 1 in 1 and equ 2 in 2

-2x + 2y = 0

2x - 2y  =  0

x    - 0    = 0

x=0

put x value for equ 2

x - y = 0

0 - y = 0

-y = 0

y = 0