On a cold winters day if u let a cup of water sitting outside, it could freeze heat is transferred out of the water describe the behavior of the water molecules and how the temperature is effected

try using substitution:

x + y - 6 = x - y. (i'm not giving you the exact answer). since 0 = x - y, then sub 0 in the equation with x - y. combine your like terms, and then use inverse operations, and you'll have your answer.

: -)

i think that it is c, d, and e, hope this