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uyen87517
2 năm trước
a) (-115)+(-40)+115+/-35/ b) /x-5/-1=6 c) /a/=5 thì a=.... d) 185-3.(x-5)=5.4 ² e) 3^x-1+/-27/=6 ²./3/ LƯU Ý: 3^x-1 là 3 mũ x-1 nha
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