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7,3=5+30+7x+32+27+10/14+x
7,3(14+x)=104+7x
102,2+7,3x=104+7x
7,3x-7x=104-102,2
0,3x=1,8
x=1,8/0,3
x=6
jadi, jawabannya d.6
Maaf kalau salah (^_^)