Jawab:
c
Penjelasan dengan langkah-langkah:
2x -18 + 1,5x + x =1804.5x =1989x = 396x= 44 derajat
B. 40°
(2x + 18)° + 1,5x + x = 180°
2x + 18° + 1,5x + x = 180°
(2x + 1,5x + x) = 180°
(3,5x + x) = 180°
4,5x = 80°
x =
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Jawab:
c
Penjelasan dengan langkah-langkah:
2x -18 + 1,5x + x =180
4.5x =198
9x = 396
x= 44 derajat
B. 40°
Penjelasan dengan langkah-langkah:
(2x + 18)° + 1,5x + x = 180°
2x + 18° + 1,5x + x = 180°
(2x + 1,5x + x) = 180°
(3,5x + x) = 180°
4,5x = 80°
x =
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