Question

solve the following systems of equation
X- Y = 3
X+Y = 5

Answer 1

Add both the equations, we get
2X = 8
X = 4
X - Y = 3
4 - Y = 3
Y = 4 - 3 = 1

Answer 2

x-y=3 .......(1)
x+y=5.........(2)

solve both equation
2x=8
x=8/2
x=4.........(3)


putting the value of eq.3 in eq 1
4-y=3
-y=3-4
y=1




x=4 and y=1


I hope it helps you