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Lubov Fominskaja [6]
3 years ago
12

Students are going on a field

Mathematics
1 answer:
lara31 [8.8K]3 years ago
6 0

Answer:

5 buses and 3 vans were taken.

Step-by-step explanation:

x+y=8

13x+5y=80

----------------

x=8-y

13(8-y)+5y=80

104-13y+5y=80

104-8y=80

8y=104-80

8y=24

y=24/8

y=3

x+3=8

x=8-3=5

x=5, y=3. (5, 3)

5 buses and 3 vans were taken.

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