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Naily [24]
3 years ago
15

Use the combination method to solve for y: 5x + 3y = 12 and -5x + 4y = 16

Mathematics
1 answer:
Effectus [21]3 years ago
3 0

Answer:

y = 4

Step-by-step explanation:

We have,

5x + 3y = 12 ....(1)

and

-5x + 4y = 16 ....(2)

Adding equation (1) and (2),

0 + 7y = 28

or

7y = 28

Dividing both sides by 7,

y = 4

So, the value of y = 4.

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