Question 104265
x-y=10
__x=y+10

x+y=4
But,
__x=y+10

Thus,
y+10+y=4
_2y+10=4
____2y=-6
_____y=-3

Solving for x,

x=-3+10
x=7


Therefore, x=7 and y=-3.


Power up,
HyperBrain!