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

Toán Lớp 6: `7x-x=5^21`:`5^19`+`3 ·2^2`-7`

Toán Lớp 6: 7x-x=5^21:5^19+3 ·2^2-7

Comments ( 2 )

  1. Giải đáp + Lời giải và giải thích chi tiết:
    7x-x=5^21:5^19+3.2^2-7
    =>6x=5^2+3.4-7
    =>6x=25+12-7
    =>6x=37-7
    =>6x=30
    =>x=30:6
    =>x=5

  2. $#Dream$
    7x-x=5^21:5^19+3 ·2^2-7
    7x-x=5^2+3·4-7
    7x-x=25+12-7
    7x-x=37-7
    7x-x=30
    7x-1x=30
    (7-1)x=30
    6x=30
    x=30:6
    x=5
    Vậy x=5

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

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