Question

How do I find 2y+x=14? I need to solve it

Answer 1

impossible without a second equation with x and y in it

Answer 2

Plug in 0 for y:
2(0)+x=14
x=14
Plug in 14 for x
2y+14=14
   -14   -14
2y=0
/2   /2
y=0

Plug it all in to check:
2(0) +14=14
14=14

Hope this helps!