3(x-4)+2=101 2(x-6)+4=98 334-(3x+20)=284 (x-50).4-3=97 120-4(2x-6)=80 150+5(3x+1) =200

3(x-4)+2=101
2(x-6)+4=98
334-(3x+20)=284
(x-50).4-3=97
120-4(2x-6)=80
150+5(3x+1) =200

0 bình luận về “3(x-4)+2=101 2(x-6)+4=98 334-(3x+20)=284 (x-50).4-3=97 120-4(2x-6)=80 150+5(3x+1) =200”

  1. a) $3(x-4)+2=101$

    $⇔ 3x-12+2=101$

    $⇔ 3x=101+10$

    $⇔ 3x=111$

    $⇔ x=37$

    b) $2(x-6)+4=98$

    $⇔ 2x-12+4=98$

    $⇔ 2x=98+8$

    $⇔ 2x=106$

    $⇔ x=53$

    c) $334-(3x+20)=284$

    $⇔ 3x+20=334-284$

    $⇔ 3x=50-20$

    $⇔ 3x=30$

    $⇔ x=10$

    d) $(x-50).4-3=97$

    $⇔ (x-50).4=100$

    $⇔ x-50=25$

    $⇔ x=50+25$

    $⇔ x=75$

    e) $120-4(2x-6)=80$

    $⇔ 4(2x-6)=40$

    $⇔ 2x-6=10$

    $⇔ 2x=16$

    $⇔ x=8$

    f) $150+5(3x+1)=200$

    $⇔ 5(3x+1)=50$

    $⇔ 3x+1=10$

    $⇔ 3x=9$

    $⇔ x=3$

     

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  2. Đáp án:

     

    Giải thích các bước giải:

     `3(x-4)+2=101`

    `3(x-4)=99`

    `x-4=33`

    `x=37`

    `2(x-6)+4=98`

    `2(x-6)=94`

    `x-6=47`

    `x=53`

    `334-(3x+20)=284`

    `3x+20= 50`

    `3x=30`

    `x=10`

    `(x-50).4-3=97`

    `(x-50).4=100`

    `x-50=25`

    `x=75`

    `120-4(2x-6)=80`

    `4(2x-6)=40`

    `2x-6=10`

    `2x=16`

    `x=8`

    `150+5(3x+1)=200`

    `5(3x+1)=50`

    `3x+1=10`

    `3x=9`

    `x=3`

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