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

Toán Lớp 5: [(315+372).3+(372+315).7]:(26.13+74.14) giải giúp mik vs ạ mik đang cần gấp ạ thanks you!

Toán Lớp 5: [(315+372).3+(372+315).7]:(26.13+74.14)
giải giúp mik vs ạ mik đang cần gấp ạ
thanks you!

Comments ( 2 )

  1. [(315 + 372) . 3 + (372 + 315) . 7] : (26 . 13 + 74 .14)
    =[(7 + 3)(315 + 372)] : (2 x 13 x 13 + 2 x 7 x 74)
    =10 x 687 : [2(13 x 13 + 7 x 74)]
    =10 x 687 : (2 x 687)
    =6870 : 1374
    =5

  2. [(315+372) . 3 + (372+315) . 7 ] :  ( 26 . 13 + 74 . 14 )
    = [ (7+3)(315+372)] : ( 2 . 13 . 13 + 2 . 7 . 74 )
    =  (10 . 687 ) : [2(13 . 13 + 7 . 74) ]
    = (10 . 687) : (2 . 687)
    = 6870 : 1374
    = 5

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

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