5 points Mosquitoes can carry heartworms, a deadly parasite, to pets that are bitten and not protected. In an especially damp and humid summer, which most likely would occur?

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.

: -)

your spelling is a little off : ]