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marin [14]
3 years ago
14

If 5 sweaters cost $43.60. how much would 7 sweaters cost?

Mathematics
1 answer:
ivanzaharov [21]3 years ago
7 0
Hi there!

To find this out, divide 43.60 by 5 to find the single cost..

43.60 / 5 = 8.72.

1 sweater is $8.72

Multiply 8.72 by 7 to find the cost of 7 sweaters.

8.72 * 7 = 61.04.

7 sweaters cost $61.04.

Hope this helps! ☺♥
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  x = 7

Step-by-step explanation:

First, you look at the equation. Identify the locations of variable terms (both sides of the equal sign) and the constant terms (both sides of the equal sign).

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I like to start by subtracting <em>the variable term with the smallest coefficient</em>. Here, that is 3x, so we add -3x to both sides of the equation.

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__

It is generally a good idea to <em>check your work</em> by seeing if your solution value satisfies the equation:

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<em>Additional comment</em>

By subtracting 3x from 5x, the result is 2x with a positive coefficient. We could solve the equation just as easily by subtracting 5x from 3x. That result would be ...

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Subtracting 1 would give

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and you would multiply by -1/2 to get x=7. I personally like to avoid having this many minus signs show up in the problem. That is why I choose to subtract the x-term with the smallest coefficient.

5 0
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