Question 81720
Just add the two equations together:

x + y = 6
x – y = 4

2x=10
x=5


Now, substitute this value of x back into either equation (the first one will do!)

x+y=6
5+y=6
y=1


Check by substituting both numbers into the second equation:
x-y=4
5-1=4  It checks!!


R^2 at SCC