∠(5x + 6)° and ∠(8x + 5)° are a linear pair, which means their sum will add upto 180° .
Which means :-







Then :-
∠(5x + 6)° :-



∠(8x + 5)° :-



As the measure of both angles are adding up to form 180° (71+109=180), we can conclude that we have found out the correct value of x .
Therefore , the value of :-
