12.6 19.92 14.4-9.92
19.92+14.4 - 9.92
19.92+14.4-9.92 =19.92-9.92+14.4 =10+14.4 =24.4
19.92+14.4 - 9.92¼ò±ã¼ÆËã
=19.92-9.92+14.4 =10+14.4 =24.4
19.92+14.4 - 9.92¡£ÓÃÍÑʽ¼ÆËã?
19.92£9.92+14.4 =10+14.4 =24.4
19.92+14.4 - 9.92ÍÑʽ¼ÆËã?
=£¨19.92-9.92£©+14.4 =10+14.4 =24.4 С»ï°éÃÇ¿ÉÒÔ°ïµ½ÄãÃÇÂð😋19.92+14.4£9.92=£¨19.92-9.92£©+14.4=10+14.4...
14.4 19.92 9.92ÔõÑù¼ò±ãÔõÑùËã
14.4+19.92-9.92 =14.4+10 =24.4
14.4 Å®+9.92+ 19.92ÕâµÀÌâÔõô¼ò±ã
14.4 Å®+9.92+ 19.92ÕâµÀÌâÔõô¼ò±ã 14.4 Å®+9.92+ 19.92 =14.4+10+10-0.08-0.08 =34.4-0.16 =34.24
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