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[tex]\huge \bf༆ Answer ༄[/tex]

As we know, sum of interior angles of a triangle is 180°

that is ~

  • [tex] \sf13x + 2 + 5x - 7 + 3x - 4 = 180[/tex]

  • [tex] \sf21x - 9 = 180 [/tex]

  • [tex] \sf21x = 180 + 9[/tex]

  • [tex] \sf x = \dfrac{189}{21} [/tex]

  • [tex] \sf x = 9 \degree[/tex]

Hence, value of x is 9°

mhanifa

Answer:

  • x = 9

Step-by-step explanation:

Sum of interior angles is 180:

  • (13x + 2) + (5x - 7) + (3x - 4) = 180
  • 21x - 9 = 180
  • 21x = 189
  • x = 189/21
  • x = 9

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