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marin [14]
3 years ago
15

​ 21x+6y=42 7x+2y=14 ​

Mathematics
2 answers:
saw5 [17]3 years ago
6 0

For this case we have the following system of equations:

We multiply the second equation by -3:

Thus, we observe that the second equation is equivalent to the first, if we add both we get:

The equality is fulfilled. The lines are on top of each other.

Answer:

Infinite solutions

Vesna [10]3 years ago
3 0
Infinite solutions

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