Viruses and bacteria are both microscopic and can both cause disease. viruses differ from bacteria in that all viruses a. cause insect transmitted diseases. b. can be destroyed by antibiotics. c. have cell walls. d. need a living host cell to reproduce.

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.

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2%? i tried finding the exact sorry if it's not 100% correct ; -;