Question

Solve for the value of a
( pls help i dont get this at all)

Answer 1

Given that

(5a+6 )°+90°+(7a)°=180°

(angles on a straight line sum up to 180°)

5a°+6°+90°+7a°=180°

5a°+7a°=(180-96)°

12a°=84°

Deviding both sides by 12° gives

a=84/12

a=7°

therefore the value of

a=7°