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Tomtit [17]
3 years ago
7

Which is the approximate solution for the system of equations 8x - 10y = -23 and 9x + 10y = -16?

Mathematics
1 answer:
jeka943 years ago
3 0

Answer: x=-\frac{39}{17}\\y=\frac{79}{170}


Step-by-step explanation:

1. To solve the system of equations you can apply the Elimination method:

- Sum both equations:

8x-10y=-23\\9x+10y=-16\\--------\\17x=-39

- Solve for x:

x=-\frac{39}{17}

- Substitute x into one of the original equations and solve for y:

9(-\frac{39}{17})+10y=-16\\10y=\frac{79}{17}\\y=\frac{79}{170}

2. The answer is:

x=-\frac{39}{17}\\y=\frac{79}{170}

3. In the figure attached you can see the graph with the approximate solution.


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