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inessss [21]
2 years ago
9

Please answer this !!

Mathematics
1 answer:
Dimas [21]2 years ago
4 0

Answer:

a=4.5

Step-by-step explanation:

We know that the two angles are alternate interior angles, which means that they are congruent.

6a+42=18a-12

54=12a

4.5=a

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