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lisabon 2012 [21]

2 years ago

10

Question 7 (2 points)

1 answer:

Oksanka [162]2 years ago

6 0

2x + 9 = 5x - 12

2x - 5x = - 1- 9

- 3x = - 21

x = 21/3

x = 7

Y = 60°

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