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

Toán Lớp 7: (-48) + 66 + ( -52) (-127) – ( 45 – 127 ) ( -49) – [(-16) -13]

Toán Lớp 7: (-48) + 66 + ( -52)
(-127) – ( 45 – 127 )
( -49) – [(-16) -13]

Comments ( 2 )

  1. Gửi bạn!
    Giải đáp:
    $(-48) + 66 + ( -52) = 48 – 66 -52 = -70$
    $(-127) – ( 45 – 127 ) = -127 – 45 + 127 = -45$
    $( -49) – [(-16) -13] =  -49 – (-29) = -20$

  2.     $(-48) + 66 + ( -52)$
    $= (-48) + ( -52) + 66$
    $= (-100) + 66$
    $= -34$
        $ (-127) – ( 45 – 127 ) $
    $= (-127) -45 +127$
    $= (-127) + 127 -45$
    $= -45$
        $( -49) – [(-16) -13]$
    $= ( -49) – (-29)$
    $= -20$
     

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