# Math 117

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Is this equation correct: (3 • x • y)4 = 81 • x • y ? Explain why. If it is correct, how can you prove this? If it is incorrect, what should be done to make it right?

• Math 117 -

The stars that you show in your
equation means multiplication,
but they are not normally shown
in equations; because it is under
stood to mean multiply. The equation
is normally written like this:
4(3XY) = 81XY.

• Math 117 -

This is not an equation; 12XY
DOES NOT EQUAL 81XY.

• Math 117 -

So would you consider this equation correct if so why and if not why not?

• Math 117 -

This is correct: 12XY < 81XY, In other
words, 12 apples are less than 81 apples. So this is an inequality.

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