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2023-11-14 20:15:31
x + x/3 .45 + x/2 .14=230
x+15x +7x =230
23x=230
x=10
(dấu . là nhân )
x + x/3 .45 + x/2 .14=230
x+15x +7x =230
23x=230
x=10
(dấu . là nhân )