tolong bantu besok dikumpulkan! no:2 dan 3

1) 180° - 42° - 90° = 48°

2) 90° + (2x+3x)° = 180°
                  5x°     = 180 - 90
                        x  = 18°
    
    ∠LKM = 2 x
                = 2 (18)
                = 36°

     ∠LMK  = 3x
                 = 3(18)
                 = 54°