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Anni [7]
3 years ago
11

I’m having trouble on clearing fractions. In my class, there are parentheses in the original equation. And when using distributi

ve property, we don’t multiply the numbers within the original parentheses. Why?

Mathematics
1 answer:
AURORKA [14]3 years ago
6 0

Start with

7\left(5x+\dfrac{1}{2}\right)=37x+\dfrac{2}{3}

Multiply both sides by 6:

6\cdot 7\left(5x+\dfrac{1}{2}\right)=6\left(37x+\dfrac{2}{3}\right)

On the left hand side, we have

6\cdot 7\left(5x+\dfrac{1}{2}\right)=42\left(5x+\dfrac{1}{2}\right)

And we can distribute the 42 to get

42\left(5x+\dfrac{1}{2}\right)=210x+21

On the right hand side, we have

6\left(37x+\dfrac{2}{3}\right)=222x+4

So, the equation becomes

210x+21=222x+4

Subtract 210x from both sides to get

21=12x+4

Subtract 4 from both sides to get

17=12x

Divide both sides by 12 to get

x=\dfrac{17}{12}

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Step-by-step explanation:

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8 0
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PLEASE HELP:<br> Solve for a. <br> 4 1/5a -2.2 = -1 4/5a+ 3.8<br> Please show work!
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4 1/5a-2.2=

4 1/5a=4.2a So,

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__________
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I think that is it!
4 0
3 years ago
Area of a regular polygon with 100 sides and a perimeter of 100 units
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Now we find the area of the polygon.  Since there are 100 sides, there will be 100 equal triangles using the center as a vertex.  The formula for the area of a triangle is A=1/2bh; in this case, b is s, the side length, and h is a, the apothem. This gives us:
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Is this correct??<br>I don't know
Alexandra [31]
In my opinion, ur right
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