solve the system: x - 3y = 5 2x + y = 4

x - 3y = 5
........(1)

2x + y = 4 ........(2)

using the eliminattion
methos, multiply (2) by 3 and add to (1):

==> 7x = 17

==> x = 17/7

Now to calculate y,
substiute in (2):

==> y= 4 - 2x

          = 4-
2(17/7)

           = (28 - 34)/7 = -6/7

==> y= -6/7