Answer:
x = 9
Explanation:
1. 180 - 74 = 106
2. 106 - 64 = 42
3. 42 + 12 = 54
4. 54 / 6 = 9
x = 9°
Forming the equation,
→ 74° + 64° + (6x - 12)° = 180°
Now the required value of x will be,
→ 126° + 6x = 180°
→ 6x = 180° - 126°
→ x = 54°/6
→ [ x = 9° ]
Hence, required value of x is 9°.
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