2 years ago

3x + 4y = 9 3x - 4y = 12

Mathematics

2 answers:

Ket [755]2 years ago

4 0

Step-by-step explanation:

+ 3x + 4y: 12

3x _ 4y: 9

9x _ 0: 3

3: 9x : 3

3 3

Svetlanka [38]2 years ago

3 0

Answer:

Step-by-step explanation:

3x-4y=12

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