Respuesta :

Advent5647

Answer:

25°

Step-by-step explanation:

Step 1:

3x + x + 20° + 60° = 180°        Sum of a Δ

Step 2:

4x + 80° = 180°       Combine Like Terms

Step 3:

4x = 100°         Subtract 80° on both sides

Step 4:

x = 100° ÷ 4         Divide

Answer:

x = 25°

Hope This Helps :)

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