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

Toán Lớp 6: Tính : (215-37).(-37)+(-125-53).13

Toán Lớp 6: Tính :
(215-37).(-37)+(-125-53).13

Comments ( 2 )

  1. $(215$ $-$ $37)$ $.$ $(-37)$ $+$ $(-125$ $-$ $53)$ $.$ $13$
    $=$ $178$ $.$ $(-37)$ $-$ $178$ $.$ $13$
    $=$ $178$ $.$ $[(-37)$ $-$ $13]$
    $=$ $178$ $.$ $(-50)$
    $=$ $-8900$
    $Chúc$ $bạn$ $học$ $tốt!$
     

  2. (215 – 37) .(-37) + (-125 – 53).13
    = 178. (-37) + (-178).13
    = 178. (-37) + 178.(-13)
    = 178 . (-37 – 13)
     = 178.(-50)
    = -8900

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

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