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Best Answer

There's no answer, because there's no question here.

You could tidy it up a bit if you wanted to, and it would look a lot neater.

4.2m + 3.9n - 1.4m - 1.5n =

2.8m - 2.4n =

0.4 (7m - 6n)

But that's still not an answer to anything. Except maybe an elementary algebra

exercise that says "Simplify" or "Tidy up this expression:".

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Q: What is the answer 4.2m plus 3.9n-1.4m-1.5n?
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Determine the area of one face (2m x 2m = 42m). Multiply by the number of faces on a cube - 6. So, 6 x 42m = 242m total surface area.


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Determine the area of one face (2m x 2m = 42m). Multiply by the number of faces on a cube - 6. So, 6 x 42m = 242m total surface area.


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The expression 7(9k 6m) is equivalent to 63k + 42m. This is obtained by distributing the 7 to each term inside the parentheses.

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How do you find the total of the surface area?

Determine the area of one face (2m x 2m = 42m). Multiply by the number of faces on a cube - 6. So, 6 x 42m = 242m total surface area.


How do you find the total surface area of a cube?

Determine the area of one face (2m x 2m = 42m). Multiply by the number of faces on a cube - 6. So, 6 x 42m = 242m total surface area.


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