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Aleks04 [339]
3 years ago
5

The value of x is? also can you explain how to do this?

Mathematics
1 answer:
jek_recluse [69]3 years ago
6 0
We have to know the angle that is not labelled. (lets call it y) 
9x + y= 180 

and the sum of the angles of a triangle is 180 
5x + (9+x) + y=180 

2 simultaneous equations 
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