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222-9+11+12:2*14+14 = ? ( )

Toán Lớp 7: |2x+1/3|-1/4=1/6 nho moi ng ^-^ ^-^

Home/ Toán Lớp 7: |2x+1/3|-1/4=1/6 nho moi ng ^-^ ^-^

Toán Lớp 7: |2x+1/3|-1/4=1/6 nho moi ng ^-^ ^-^

Tháng Chín 15, 2022 Toán học 1 Comment 0 views

Toán Lớp 7: |2x+1/3|-1/4=1/6
nho moi ng ^-^ ^-^

Comments ( 1 )

  1. thuminhthong
    thuminhthong
    15 Tháng Chín, 2022 at 11:59 chiều
    Reply
    |2x+1/3|-1/4=1/6
    <=>|2x+1/3|=5/12
    $⇔\left[\begin{matrix} 2x+\dfrac{1}{3}=\dfrac{5}{12}\\ 2x+\dfrac{1}{3}=-\dfrac{5} {12}\end{matrix}\right.$
    $⇔\left[\begin{matrix} 2x=\dfrac{1}{12}\\ 2x=-\dfrac{3}{4}\end{matrix}\right.$
    $⇔\left[\begin{matrix} x=\dfrac{1}{24}\\ x=-\dfrac{3}{8}\end{matrix}\right.$
    Vậy x in {1/24 ; -3/8}
     

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222-9+11+12:2*14+14 = ? ( )

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