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

Toán Lớp 5: e) X : 250 = 12 dư 8 f) 645 : x = 35 dư 15

Toán Lớp 5: e) X : 250 = 12 dư 8
f) 645 : x = 35 dư 15

Comments ( 2 )

  1. e) X : 250 = 12 dư 8
    =>X=(12 x 250)+8
    =>X=3000 +8
    =>x=3008
    f)645 : x = 35 dư 15
    =>645=(35 x X) + 15
    =>645-15=35 x X
    =>630=35 x X
    =>X=630 : 35
    =>x =18

  2. e):
    x : 250 = 12 dư 8
    x          = 12 × 250 + 8
    x          = 3000 + 8
    x          = 3008
    f):
    645 : x = 35 dư 15
             x = (645 – 15) : 35
             x = 18
    Cho mình xin hay nhất nha bạn!!!!
    @Drew Mclntyre
     

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