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Margaret [11]
3 years ago
6

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

Mathematics
2 answers:
Ket [755]3 years ago
4 0

Step-by-step explanation:

+ 3x + 4y: 12

3x _ 4y: 9

9x _ 0: 3

3: 9x : 3

3 3

Svetlanka [38]3 years ago
3 0

Answer:

Step-by-step explanation:

3x-4y=12

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