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Alika [10]
2 years ago
6

Umm can someone help me with this

Mathematics
1 answer:
Nina [5.8K]2 years ago
3 0

Answer: a)12

Step-by-step explanation:

the triangle is equilateral meaning that all sides have the same length so,

3x+8 = 4x-4
3x-4x=-4-8
-x=-12
x=12

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