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n= 14
2)-n=4-12
-n= -8
n= 8
3) 17-n=15
-n= 15-17
-n= -2
n= 2
4) 3n = 8-2
3n = 6
n =2
n = 21 - 7
= 14
4. 3n + 2 = 8
3n = 8 - 2
3n = 6
n = 6 - 3
= 3
maafnya no 2 sm 3 gak tau