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Hitman42 [59]
3 years ago
15

Solve equation. 2x-5y=20

Mathematics
1 answer:
Novay_Z [31]3 years ago
5 0
If you solve for x you get:
x=(<span><span><span>5/2)</span>y</span>+<span>10
</span></span>
If you solve for y you get:
y=(<span><span><span>2/5)</span>x</span>−<span>4</span></span>
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2 years ago
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I can solve with 2 methods:

I. Because the discount is 15 % of 18 $ , the price will be (100-15=85) 85 % of 18 $
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Personally I believe the first is an easier method.
I hope you understand and you can apply this in every similary problem.



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3 years ago
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X=-14
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Read 2 more answers
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