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= n = -5
b. -n= 10-9-(-5)
= -n= -4
n= 4
c. 8+(-21)-(-10)=n
= -3=n
n=-3
yang d n nya dimana ya? .-.
b. -n + 9 - 5=10 ⇒ 9 - 5-10 = n ⇒n=-6
c. 8 - 21 +10=n ⇒ n = -3
d. -7+14+20=n ⇒n = 27