Cảm hơn Thack you vinamiu

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Cảm hơn
Thack you vinamiu
cam-hon-thack-you-vinamiu

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Mít Mít 4 years 2020-10-24T06:48:19+00:00 2 Answers 94 views 0

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  1. King
    0
    2020-10-24T06:49:19+00:00
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    Bài 74:

    a) `541+(218-x)=735`

    `⇒ 541+218-x=735`

    `⇒ 759-x=735`

    `⇒ x=759-735=24`

    b) `5(x+35)=515`

    `⇒ 5x+175=515`

    `⇒ 5x=515-175=340`

    `⇒ x=340/5=68`

    c) `96-3(x+1)=42`

    `⇒ 3(x+1)=96-42=54`

    `⇒ x+1=54÷3`

    `⇒ x+1=18`

    `⇒ x=18-1=17`

    d) `12x-33=3².3³`

    `⇒ 12x-33=3^5`

    `⇒ 12x-33=243`

    `⇒ 12x=243+33=276`

    `⇒ x=276/12=23`

     

  2. Maris
    0
    2020-10-24T06:49:41+00:00
    Reply

    $\text{Chào bạn. Bạn tham khảo nhé !}$
    $\text{Bài làm :}$ $\text{Bài 74 : Tìm x ∈ N, biết :}$
    $\text{a, 541 + ( 218 – x ) = 735}$
    $\text{                218 – x = 735 – 541}$
    $\text{                218 – x = 194}$
    $\text{                          x = 218 – 194}$
    $\text{                          x = 24}$
    $\text{b, 5( x + 35 ) = 515}$
    $\text{        x + 35 = 515 ÷ 5}$
    $\text{        x + 35 = 103}$
    $\text{        x = 103 – 35}$
    $\text{        x = 68}$
    $\text{c, 96 – 3( x + 1 ) = 42}$
    $\text{           3( x + 1 ) = 96 – 42}$
    $\text{           3( x + 1 ) = 54}$
    $\text{               x + 1 = 54 ÷ 3}$
    $\text{               x + 1 = 18}$
    $\text{               x = 18 – 1}$
    $\text{               x = 17}$
    $\text{d, 12x – 33 = 3^2 . 3^3}$
    $\text{    12x – 33 = 9 . 27}$
    $\text{     12x – 33 = 243}$
    $\text{     12x = 243 + 33}$
    $\text{      12x = 276}$
    $\text{          x = 276 ÷ 12}$
    $\text{          x = 23}$

    $\text{#I_love_Diamonds}$
    $\text{#No_copy}$
    $\text{Chúc bạn hok tốt nhé !}$
    $\text{Cho mik xin vote 5 sao + 1 cảm ơn + câu trl hay nhất nhé}$

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