please solve this question from grade 9 of lesson lines and angles .... Hurry it's urgent
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4b+60+b=180° (angles on a straight line)
5b+60°=180°
5b=180°-60°
5b=120°
b=120°\5
b=24°
therefore,
4b=24×4
4b=96°
60°+b=2c (vertically opp angles)
60°+24°=84°
2c=84°
therefore,
c=84°\2
c=42°
4b=a (vertically opp angles)
therefore,
a=96°
5b+60°=180°
5b=180°-60°
5b=120°
b=120°\5
b=24°
therefore,
4b=24×4
4b=96°
60°+b=2c (vertically opp angles)
60°+24°=84°
2c=84°
therefore,
c=84°\2
c=42°
4b=a (vertically opp angles)
therefore,
a=96°
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