there are two method which you can you use to show this.
first
X+14=22
by putting 8 in place of X if LHS =RHS, then it is the solution of the euation
8+14 = 22
22=22
hence LHS =RHS
Yes, 3+11=14
No
y = 6
x = 19
(0, -14)
x = 3 and 1/3
Yes.
You should be able to look at this equation, or use the discriminant and know that there are no real roots.
2x + 5y = 16 -2x - 3y = -14 2y = 2 y = 1 / x = 5.5 (5.5,1) or (5 1/2,1)
it equals 28
14 + 14 = 28
-14