Question

solve for x and y using elimination method : x + y = 3 ; x - y = 3.​

Answer 1

Step-by-step explanation:

x + y = 3

x - y = 3

x = 3+y

3 + y + y = 3

y = 0

x = 3

Answer 2

Answer:

x+y=3..... 1)

x-y =3...... 2)

multiply equation 1 and 2 by (2)

2(x+y=3)

2(x-y=3)

....

2x+2y=6.......3)

2x-2y=6..........4)

by changing signs we get

4y=0

y=4 , x=8