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222-9+11+12:2*14+14 = ? ( )

Toán Lớp 7: 1,6 mũ 2 : o,4 mũ 2 – (14+1/4) +/-7 phần 5/- ( 1+ 3/4) giải giúp em vs ạ

Toán Lớp 7: 1,6 mũ 2 : o,4 mũ 2 – (14+1/4) +/-7 phần 5/- ( 1+ 3/4)
giải giúp em vs ạ

Comments ( 2 )

  1. 1,6^2 : 0,4^2 – ( 14 + 1/4 ) +  | -7/5 | – ( 1+ 3/4)
    = 64/25 : 4/25 – 57/4 + 7/5 – 7/4
    = 16 – 57/4 + 7/5 – 7/4
    = 7/4 + 7/5 – 7/4
    = 7/5
     

  2. 1,6^2 : 0,4^2 – ( 14 + 1/4 ) + | -7/5 | – ( 1 + 3/4 )
    = 64/25 : 4/25 – 57/4 + 7/5 – 7/4
    = 16 – 57/4 + (-7)/20
    = 7/4 + (-7)/20
    = 7/5
    @Rin

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222-9+11+12:2*14+14 = ? ( )