6=6x+6y
-14=18x+14
use elimination method
fix the typo. 2nd equation has no "y" term.
Then, note that 18 = 18x+18y
and you can eliminate the 18x stuff.
-14=18x+14
use elimination method
Then, note that 18 = 18x+18y
and you can eliminate the 18x stuff.