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Sagot :
Answer:
Step-by-step explanation:
Every triangle's angles MUST add up to 180. Therefore, 43 + 43 + (6-8x) must be equal to 180. So:
43 + 43 + (6 - 8x) = 180
86 + (6 - 8x) = 180
6 - 8x = 94
-8x = 88
x = -11
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