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Marta_Voda [28]
2 years ago
13

Find the value of x. A.18 B.15 C.16 D.19 PLEASE HELP!!!!!

Mathematics
1 answer:
In-s [12.5K]2 years ago
7 0

Answer:

x = 19

Step-by-step explanation:

123°+3x = 180°

3x = 180°-123°

3x = 57

x = 57/3

x = 19

The reason why we use 123° + 3x = 180° because both are adjacent angles. Adjacent angles add up to 180°

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