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inna [77]
3 years ago
12

3х + 7y - 21 I need helpppp pronto please

Mathematics
2 answers:
kicyunya [14]3 years ago
6 0

Answer:

3x+7(y-3)

Step-by-step explanation:

PtichkaEL [24]3 years ago
5 0

That's the simplest it can go.

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xxMikexx [17]
I believe by the first equation they are referring two a representation of the total amount of money made up by the two types of coins. I found this to be 0.05x + 0.10y = 3.50

In my work I solved for the amount of each coin- I assume this is what the final step of your problem entails. If you need any help understanding/ I misinterpreted something please feel free to comment and ask :)

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Step-by-step explanation:

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seraphim [82]
I hope you speak english, because although i understood your question I don't know enough spanish to respond in it. You multiply polynomials by multiplying each part of one polynomial by all the other parts of the others, and then adding it all. For example: (ax+b) * (x+c) = (ax*x)+(ax*c)+(b*x)+(b*c) = a x^{2}  + acx + bx+bc

Comprehende? 
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