Respuesta :

the answer is one . 3 times 2 is 6. And you know 6+1 =7

Answer:

1

Step-by-step explanation:

x + 3y = 7

x + 3y = 2

3y = 3 x y

y = 2

3 x 2 = 6y

x + 6 = 7

7 - 6 = 1

x = 1

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