Taiga is found in all of the following locations except . a.
Canada
b.
Asia
c.
Europe
d.
North America

Canada I believe.

Explanation:

Answer

Both are correct.

Explanation
The both equations are the same.
When we say that y=x+10, we can make x the subject of the formula and get;
y=x+10
y-10=x
x=y-10.

If the substitution is done correctly, that is x+10 for y and y-10 for x in the other equation then, both would be correct.