Jawab:
10) 3n : (-4) = (-9)
3n = (-9) x (-4)
3n = 36
n = 36 : 3 = 12 (Pilihan D)
11) 9 x a = - 27
9a = -27
a = -27 : 9 = -3 (cari nilai a)
-6 : b = -3
-6 = -3 x b
-6 = -3b
b = (-6) : (-3)
b = 2 (Cari nilai b)
Jadi, b - a = 2 - (-3) = 5 (Pilihan B)
12) 117 x 18 + 18 x (-17) : 45 x 32 - 45 x 12
= 2106 + (-306) : 1440 - 540
= 1800 : 900 = 2 (Pilihan D)
ATAU
Penjelasan dengan langkah-langkah:
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Jawab:
10) 3n : (-4) = (-9)
3n = (-9) x (-4)
3n = 36
n = 36 : 3 = 12 (Pilihan D)
11) 9 x a = - 27
9a = -27
a = -27 : 9 = -3 (cari nilai a)
-6 : b = -3
-6 = -3 x b
-6 = -3b
b = (-6) : (-3)
b = 2 (Cari nilai b)
Jadi, b - a = 2 - (-3) = 5 (Pilihan B)
12) 117 x 18 + 18 x (-17) : 45 x 32 - 45 x 12
= 2106 + (-306) : 1440 - 540
= 1800 : 900 = 2 (Pilihan D)
ATAU
Penjelasan dengan langkah-langkah: