Im struggling on this can someone explain it to me

Mathematics

1 answer:

AleksandrR [38]2 years ago

6 0

Answer:

B. 31°; 106° and 43°.

Step-by-step explanation:

1) the rule is:

(5x-7)+(3x+1)+(11x-4)=180°;

2) if to solve this equation, then x=10°;

3) if x=10, then after the substitution the answer is 43;31;106.

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