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

Toán Lớp 6: [2x-20][15-3x]=0 hepppppppppppppppppppppppppppppppppppppp

Home/ Toán Lớp 6: [2x-20][15-3x]=0 hepppppppppppppppppppppppppppppppppppppp

Toán Lớp 6: [2x-20][15-3x]=0 hepppppppppppppppppppppppppppppppppppppp

Tháng Bảy 14, 2022 Toán học 2 Comments 0 views

Toán Lớp 6: [2x-20][15-3x]=0
hepppppppppppppppppppppppppppppppppppppp

Comments ( 2 )

  1. khanhngantoan
    khanhngantoan
    14 Tháng Bảy, 2022 at 12:01 sáng
    Reply
    [2x-20][15-3x]=0
    2x-20=0 hoặc 15-3x=0
    x=10 hoặc x=5
    =>x=10 hoặc x=5

  2. phuongthuydung
    phuongthuydung
    14 Tháng Bảy, 2022 at 12:01 sáng
    Reply
    ( 2x – 10)( 15 – 3x) = 0
    =>\(\left[ \begin{array}{l}2x – 20 =0\\15 – 3x=0\end{array} \right.\) 
    =>\(\left[ \begin{array}{l}2x=20\\3x=15\end{array} \right.\) 
    =>\(\left[ \begin{array}{l}x=10\\x=5\end{array} \right.\) 
    Vậy x ∈ { 10 ; 5 }
     

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

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