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

Toán Lớp 6: a 12 + 13 + 14 – 15 -16 -17 b { 35 -17 } – { 25 – 17 +22 }

Toán Lớp 6: a 12 + 13 + 14 – 15 -16 -17
b { 35 -17 } – { 25 – 17 +22 }

Comments ( 1 )

  1. Giải đáp:
    a) 12 + 13 + 14 – 15 -16 -17
    =(12 + 13 + 14) – (15 +16 +17)
    =39-48
    =(-9)
    b)( 35 -17 ) – (25 – 17 +22 )
    =35-17-25+17-22
    =35-25-22
    =(-12)

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

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