D. 4
Penjelasan dengan langkah-langkah:
jika jawaban tidak dijawab = a
B = 4 x 41 = 164
S = -2 x (9 - a) = -18 + 2a
T = -1 x a = -a
164 + (-18 + 2a) + (-a) = 150
164 - 18 + 2a - a = 150
146 + a = 150
a = 150 - 146
= 4
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D. 4
Penjelasan dengan langkah-langkah:
jika jawaban tidak dijawab = a
B = 4 x 41 = 164
S = -2 x (9 - a) = -18 + 2a
T = -1 x a = -a
164 + (-18 + 2a) + (-a) = 150
164 - 18 + 2a - a = 150
146 + a = 150
a = 150 - 146
= 4