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

Toán Lớp 6: a) 3222 – (x – 235) = 2357 b) (4 – x) – 23 = -4

Toán Lớp 6: a) 3222 – (x – 235) = 2357 b) (4 – x) – 23 = -4

Comments ( 2 )

  1. a) 3222-(x-235)= 2357
    x-235= 3222-2357
    x-235= 865
    x= 865+235
    x= 1100
    b) (4-x)-23= -4
    4-x= -4+23
    4-x= 19
    x= 4-19
    x= -15

  2. $ a) 3222-(x-235)=2357 $ 
    $ ⇒ 3222-x+235=2357⇒3457-x=2357 $ 
    $ x=3457-2357=1100 $ 
    $ b) (4-x)-23=-4⇒4-x=-4+23=19 $ 
    $ x=4-19=-15 $
    ” Xin hay nhất “

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