6. Find the value of x

In \(\Delta LMN\), \(MN\) is extended to \(O\). If \(\angle MLN = 85 - x\), \(\angle LMN = 3x\) and \(\angle LNO = 7x - 10\), obtain the value of \(x\).
 
YCIND_260823_8443_three lines_math2_37.png
 
The value of \(x = \)
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