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can someone solve this
7x+4y=12
x+2y=-4

Sagot :

Ressegamer12idn

Answer:9.

Step-by-step explanation:7x -4y =9. 13x = 39. x = 3. 3(3) + 2y = 15. 9 +2y =15. 2y = 6y = 3. check: 7(3)

- 4(3) = 21 - 12 = 9.

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