Find the unknown size of angle

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Lucas asked Nov 16, 2022

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42 votes

Find the unknown size of angle

Mathematics
high-school

Lucas asked Nov 16, 2022

by Lucas

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1 Answer

11 votes

Answer:

x = 60

2x = 120

2x + 30 = 150

2x - 30 = 90

Explanation:

2x + 2x - 30 + 2x + 30 = 360

2x + 2x + 2x + 30 - 30 = 360

6x + 0 = 360

6x = 360

x = 360 / 6

x = 60

= 2 x 60

= 120

2x + 30

= 120 + 30

= 150

2x - 30

= 120 - 30

= 90

Andrey Chausenko answered Nov 22, 2022

by Andrey Chausenko

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