( X + 2 ) + ( X + 4 ) + …+ ( X+ 8 ) + ( X + 10 ) = 150

Question

( X + 2 ) + ( X + 4 ) + …+ ( X+ 8 ) + ( X + 10 ) = 150

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Hưng Khoa 6 years 2020-11-24T07:23:11+00:00 2 Answers 107 views 0

Answers ( )

  1. Cherry
    0
    2020-11-24T07:24:13+00:00
    Reply

    (x+2)+(x+4)+…+(x+8)+(x+10)=150

    (x+2)+(x+4)+(x+6)+(x+8)+(x+10)=150

    (x+x+x+x+x)+(2+4+6+8+10)=150

    5x+30=150

    5x=150-30

    5x=120

    x=120÷5

    x=24

    Vậy x=24

     

     

  2. mit
    0
    2020-11-24T07:24:23+00:00
    Reply

    Đáp án:

       `x=24`

    Giải thích các bước giải:

    `( x + 2 ) + ( x+ 4 ) + …+ ( x+ 8 ) + ( x+ 10 ) = 150`

    `=>(x+2)+(x+4)+(x+6)+(x+8)+(x+10)=150`

    `=>5x+(2+4+6+8+10)=150`

    `=>5x+30=150`

    `=>5x=120`

    `=>x=24`

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