Matematika mtk tolong banget ya ​

unakirlinulv – June 09, 2023

mtk tolong banget ya ​

Sudut x :

(5x + 21)° + (3x - 9)° = 180°

8x + 12° = 180°

8x = 180° - 12°

8x = 168°

x = 168/8

x = 21°

__

Sudut ABC :

= (3x - 9)°

= 3(21) - 9°

= 63° - 9°

= 54°(OPSI B)[tex] \\ [/tex]

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