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atroni [7]
4 years ago
9

What is the value of z?

Mathematics
1 answer:
choli [55]4 years ago
6 0

Answer:

59

Step-by-step explanation:

z-28+2z+31=180 (angle sum property of a triangle)

3z +3 =180

3z=177

z=177/3

therefore z=59

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