Answer:
x = 6
Step-by-step explanation:
Interior angles of a triangle sum to 180°
⇒ (8x + 2)° + 70° + 60° = 180°
⇒ 8x + 132° = 180°
Subtract 132° from both sides:
⇒ 8x + 132° - 132° = 180° - 132°
⇒ 8x = 48°
Divide both sides by 8:
⇒ 8x ÷ 8 = 48° ÷ 8
⇒ x = 6
Therefore, the value of x is 6.
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