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netineya [11]
2 years ago
11

6) R E 126 10x + 8 13 + 5x D A) 1 C) 5 B) 7 D) 14

Mathematics
1 answer:
Gemiola [76]2 years ago
3 0

Step-by-step explanation:

step 1. what is the question? maybe the question is what is the value of x in the diagram. okay.

step 2. interior angles of a triangle add up to 180°

step 3. the 3 angles inside the triangle are 10x + 8, 13 + 5x, and (180 - 126)

step 4. (10x + 8) + (13 + 5x) + 54 = 180

step 5. 15x + 21 = 126

step 6. 15x = 105

step 7. x = 7.

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