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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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The percent of Tom winning a game is 20%, he played 30 games. How mang games did he lose?​
Korvikt [17]

Answer:

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4 0
3 years ago
Read 2 more answers
-3x + 4y = 12<br> 3x – 6y = 18<br> Answer has to be (x,y)
navik [9.2K]

Answer:

(24, -15)

Step-by-step explanation:

-3x + 4y = 12

3x – 6y = 18

Add the two equations together to first solve for y

-2y=30

y=-15

Enter -15 into one of the equations to solve for x

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-3x=72

x=24

Hope this helps! Please mark brainliest :)

4 0
4 years ago
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