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Hatshy [7]
3 years ago
10

Simplify this 6x-3y-z+2x+3y-7z

Mathematics
1 answer:
erica [24]3 years ago
3 0

Answer:

8x - 8z.

Step-by-step explanation:

Let's first rearrange 6x-3y-z+2x+3y-7z where all the x's are together, all y's together, and all z's are together:

6x +2x + 3y - 3y - z - 7z.

First we combine like terms.

6x + 2x ⇒ 8x

3y - 3y ⇒ 0

z - 7z   ⇒ -8z.

Since the y's result in 0, we do not include them.

Therefore, our answer is 8x - 8z.

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Solution

For this case we need to find the number of cubes in the stack given so then we can do this:

The first line present 5 cubes

The second line present 5 cubes

And the last line we got:

10 cubes

Then the total of cubes are:

10 +5+5 = 20 cubes

If we need to find the number of faces we can do the following:

5+ 4+ 4+4 +4 +1 + (5+4+4+4+4+1 ) + (5+4+4+4+4+1 ) + (5+ 4+4+4 +4 )

And solving we got:

22+22+ 22+21= 87

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1 year ago
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6 0
3 years ago
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pochemuha

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Step-by-step explanation:

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