<span>500 = 0.5 kw
0.5 * 8 * 7.5 = 30c</span>
You have to at least give us the problem...
For this case we have a system of two equations with two unknowns:

We follow the steps below:
We add the equations:

We divide between 9 on both sides of the equation:

We substitute the value of "x" in the first equation and find the value of y:

Thus, the solution of the system is: (3, -1)
Answer:
(3, -1)
Answer:
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Step-by-step explanation:
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