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valentina_108 [34]
3 years ago
9

What is the value of x?

Mathematics
2 answers:
Nina [5.8K]3 years ago
7 0
Sum of angles of a triangle = 180°

91 + 10x - 4 + 8x +3 = 180
18x + 90 = 180
18x = 90
x = 5°
hram777 [196]3 years ago
6 0
Sum of angles of a triangle = 180°

91 + 10x - 4 + 8x +3 = 180
18x + 90 = 180
18x = 90
x = 5°
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