Let's start with the SECOND equation and solve for 'y'
x + 2y = -6 Divide both sides by 2 to get:
1/2x + y = -3 SUbtract 1/2x from both sides to get
y = -3 - 1/2x Use this value for 'y' and substitute it into the FIRST equation:
-2x + (-3 - 1/2x) = -13 Now solve for 'x'
-2 1/2 x -3 = -13 Add 3 to both sides
-2 1/2 x = - 10 Divide both sides by -2 1/2 to find 'x'
x = 4
NOW, sustitute this value of 'x' into one of the equations to find 'y'
x + 2y = -6
4 + 2y = -6
2y = -10
y = -5 Ta Da!
