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2024-05-01 22:13:31
x-1/2+x=x/3 MTC:6
3x-3/6+6x/6=2x/6
3x-3+6x=2x
3x+6x-2x=3
7x=3
x=3/7
2024-05-01 22:09:49
x/5-x/2=9
6x/30-15x/30=270/30
6x-15x=270
-9x=270
x=30
2024-05-01 22:06:06
vì do vùng Đồng bằng sông Cửu Long có địa hình thấp, mạng lưới kênh rạch chằng chịt và lại không có đê điều bao bọc như vùng Đồng bằng sông Hồng.
2024-04-30 19:39:32
a=10
b=-15