How do you solve by substitution #3x - y = -6# and #x + y = 2#?
1 Answer
Jun 13, 2015
x= -1, y= 3
Explanation:
From 1st equation y= 3x+6. Plug it for y in the 2nd equation, x+3x+6=2,
4x= -4
x= -1. Therefore y= -3+6= 3
