1 Answer

Arne Stockmans · Answer 1 · 2023-01-29T08:56:53+0000

Answer:

x = 40

Explanation:

→ Find the sum of the angles

x + 2x + x + 20 = 4x + 20

→ Equate expression to 180

4x + 20 = 180

→ Minus 20 from both sides

4x = 160

→ Divide both sides by 4

x = 40

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