Question

30° +15° + 2x-10° + x +10º = 180°​

Answer 1

Answer:

x = 45°

Explanation:

30° + 15° + 2x - 10° + x +10º = 180°

45° + 3x = 180°

3x = 180° - 45°

3x = 135°

x = 135/3

x = 45°

Answer 2

Answer:

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Explanation:

30°+15°+2x-18°+x+10°=180°

2x+x=180°-30°-15°+10°-10°

3x=135°

x=45°

Therefore, 2x-10°=90°-10°=80°

x+10°=45°+10°=55°