Tìm x €N, biết a) (x+14):12-6=4 b)(x+35)-120=0 c)(15+x):3=3mũ6:3mũ3 d)5mũ x.5mũ2=5mũ6

Question

Tìm x €N, biết
a) (x+14):12-6=4
b)(x+35)-120=0
c)(15+x):3=3mũ6:3mũ3
d)5mũ x.5mũ2=5mũ6

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Dâu 6 years 2020-11-01T03:54:03+00:00 2 Answers 111 views 0

Answers ( )

  1. Gerda
    0
    2020-11-01T03:55:16+00:00
    Reply

    a, `(x+14):12-6=4`

    `=> (x+14) : 12 = 8`

    `=> x + 14 = 8 . 12 = 96`

    `=> x = 82`

    b,` (x+35)-120=0`

    `=> x + 35 = 120`

    `=> x = 85`

    c, `(15+x):3=3^6 : 3^3`

    `=> (15+x):3=3^3`

    `=> 15 + x = 3^4 = 81`

    `=> x = 66`

    d, `5^x . 5^2 = 5^6`

    `=> 5^(x+2)=5^6`

    `=> x + 2 = 6`

    `=> x = 4`

     

  2. kiet
    0
    2020-11-01T03:55:22+00:00
    Reply

    Chúc may mắn

     

    tim-n-biet-a-14-12-6-4-b-35-120-0-c-15-3-3mu6-3mu3-d-5mu-5mu2-5mu6

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