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Softa [21]
4 years ago
6

Increase £30 by 15. what is the answer

Mathematics
1 answer:
Whitepunk [10]4 years ago
5 0
45..............

....
...
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  x = 7

Step-by-step explanation:

Using Cramer's rule, the value of x is ...

  x=\dfrac{\left|\begin{array}{cc}2&3\\22&-2\end{array}\right|}{\left|\begin{array}{cc}-1&3\\4&-2\end{array}\right|}

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3 years ago
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4 0
3 years ago
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