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Alecsey [184]
3 years ago
7

I don’t understand the concept of this problem

Mathematics
1 answer:
maxonik [38]3 years ago
5 0

Answer:

This uses the method of elimination/addition.

Step-by-step explanation:

1 (9x + 7y = 15)

-7 (5x + y = -9) <— let’s eliminate y for both equations

9x + 7y = 15

+ -35x - 7y = 63 <— add both of the equations

—————————————————

- 26x + 0y = 6

(Please let me know if the answer is correct or not)

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Archy [21]

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Read 2 more answers
How many years (to two decimal places) will it take $15000 to grow to $17500 if it is invested at 8% compounded semi- annually?
VLD [36.1K]

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1.97 years

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:D

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