The student compares the image that she can see with an image of onion cells viewed with an electron microscope. Suggest how the two images would differ. Explain your answer.

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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