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ddd [48]
1 year ago
11

5x + 3y = 26 6x+ 7y=21

Mathematics
1 answer:
kupik [55]1 year ago
7 0

Answer:

x = -1

Step-by-step explanation:

5x + 3y = 26

- (6x + 7y = 21)

_________

-x - 4x = 5

-5x = 5

x = -1

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erastova [34]

Answer:

top to bottom, the answers are b, c, a

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For the second one,

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add 10 to both sides

2x=2x

As 2x is always equal to 2x, no matter what x is, there are infinitely many solutions for this system

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