x+30+2x=180 ( giải thích cặn kẽ giúp mình, thanks)

Question

x+30+2x=180
( giải thích cặn kẽ giúp mình, thanks)

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Piper 6 ngày 2021-12-05T06:37:49+00:00 2 Answers 1 views 0

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    0
    2021-12-05T06:38:53+00:00

    `x+30+2x=180`

    `=> 30+3x=180`

    `=> 3x=180-30`

    `=>3x=150`

    `=>x=150:3`

    `=>x=50`

     

    0
    2021-12-05T06:39:08+00:00

    x+30+2x=180

    x×(2+1)=180-30

    x×3 = 150 

    x=150:3

    x=50

    vậy x=50

    xin ctlhn ạ 

     

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