Question

X - Y =5 dan X +Y = 2

Answer 1

X -y = 5
x = y + 5

x + y = 2
y +5+y=2
2y = -3
y = 1,5
x = 1,5 + 5= 6,5

Answer 2

X-y=5
x+y=2 (dikurang)
-2y=3
y= -3/2

substitusi y = -3/2
x -3/2 = 5
x = 5 3/2