3 years ago

3x+y=15 3x-y=15 (using elimination method)

Mathematics

2 answers:

morpeh [17]3 years ago

5 0

Answer:

x = 5

y = 0

Step-by-step explanation:

3x + y = 15

3x -y = 15

Add the two equations;

6x = 30

Inverse operations;

6x = 30

/6 /6

x = 5

Back substitute;

3(5) + y = 15

15 + y = 15

y = 0

Yanka [14]3 years ago

4 0

Answer:

Step-by-step explanation:

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