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Step-by-step explanation:

x= 117........................

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Answer:

117º

Step-by-step explanation:

A triangle's interior angles add up to 180º and the angle of a straight line is 180º.

  • We can write, 38º+(180º-101º)+(180º-xº)=180º
  • Subtract, 38º+79º+(180º-xº)=180º
  • Add, 117º+(180º-xº)=180º
  • Subtract, 180º-xº=63º
  • Subtract, -xº=-117º
  • Convert to positive, xº=117º
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