Question

X + Y = 4
2 X - Y = 3

Answer 1

X + Y = 4 (-2)
2 X -Y = 3

-2X - 2y = -8
2x - y = 3

-3y = -5
y=5/3

x+y=4
x+ 5/3 = 4
×= 4 - 5/3
×= 12/3 - 5/3
x=7/3