Question 257178
1.) 3x + y = 1
2.) x - 2y = 5

From 1.) we know that y = 1 -3x.

Substituting 1-3x for y in 2.) we have:

x - 2*(1-3x) = 5
x - 2 + 6x = 5
7x = 7
x = 1

Substitute x = 1 in either 1.) or 2.) to determine the value of y.