Question

Х+y = 3
Х- y= 1
Topic algebra : simultaneous linear equations ​

Answer 1

Answer:

Х+y = 3

Х- y= 1

2X=4

X=2.

now for Y:

X+y=3

2+y=3

y=1

Explanation:

hope you understand.

Answer 2

Answer:

imagine X = 2

substitute X value

2+y= 3

y = 3-2

y = 1

substitute Y value in another equation

X-1 = 1

x = 1+1

X = 2

Final ans :- X=2 and Y=1