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

Toán Lớp 7: A.2/3+-1/3+7/15 B.40:{[11+(26-33)].2}

Toán Lớp 7: A.2/3+-1/3+7/15
B.40:{[11+(26-33)].2}

Comments ( 2 )

  1. ~Bạn tham khảo~
    A=2/3+(-1)/3+7/15
    =>A=1/3+7/15
    =>A=5/15+7/15
    =>A=4/5
    Vậy A=4/5
    B=40:{[11+(26-33)].2}
    =>B=40:{[11+(-7)].2}
    =>B=40:{4.2}
    =>B=40:8
    =>B=20/3
    Vậy B=20/3

  2. A = 2/3 – 1/3 + 7/15
    A = 1/3 + 7/15
    A = 4/5
    __________________
    B = 40 : {[11 + (26 – 33)] . 2}
    B = 40 : {[11 – 7] . 2}
    B = 40 : {3 . 2}
    B = 40 : 6
    B = 20/3
     

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

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