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horrorfan [7]
3 years ago
6

3ax-n/5=-4 solve for x

Mathematics
1 answer:
jasenka [17]3 years ago
5 0
3ax-\frac{n}{5}=-4\ \ \ |Add\ \frac{n}{5}\ to\ both\ sides\\\\
3ax=-4+\frac{n}{5}\\\\
3ax=-\frac{20}{5}+\frac{n}{5}\\\\
3ax=\frac{-20+n}{5}\ \ \ |Divide\ by\ 3a\\\\
x=\frac{-20+n}{5}*\frac{1}{3a}\\\\
x=\frac{-20+n}{15a}\\\\Asnwer\ is\ x=\frac{-20+n}{15a}.
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Answer:

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Step-by-step explanation:

Let's recall that 1 pound = 16 ounces, therefore we have:

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Cost of sixteen ounces of butter = $ 4.13

How much dose the butter for one portion cost?

We can use Direct Rule of Three for answering this question, as follows:

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16x = 4.13 * 1.7

16x = 7.021

x = 7.021/16

x = 0.44 (Rounding to the next cent)

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