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Verified answer
= 10X - 20 + 12 = 6X +1210x - 6x = 20-12+12
4x = 20
x = 5
3(5) +2 = 17
10x-20+12=6x+12
10x-6x=12+20-12
4x=20
x=5
x=n=5
3n+2=3(5)+2=15+2=17
Jawabannya d. 17