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

Toán Lớp 6: Tìm x: 5 ·( x + 7) – 10= 2 ³ ·5

Tháng Sáu 21, 2022 Toán học 2 Comments 0 views

Toán Lớp 6: Tìm x:
5 ·( x + 7) – 10= 2 ³ ·5

Comments ( 2 )

  1. haiyemy
    haiyemy
    21 Tháng Sáu, 2022 at 11:59 chiều
    Reply
    5 . (x+7) – 10 = 2^3 . 5
    5 . (x+7) – 10 = 40
    5 . (x+7) – 40 + 10
    5 . (x+7) = 50
    x + 7 = 50 ÷ 5
    x + 7 = 10
    x = 10 – 7
    x = 3
    Vậy x = 3

  2. ngoclanquynh
    ngoclanquynh
    21 Tháng Sáu, 2022 at 11:59 chiều
    Reply
    $\text{*Ta có:5.(x+7)-10=}$$2^{3}.5$
    =>$\text{5x+35-10=40}$
    =>$\text{5x+35=40+10}$
    $\Rightarrow$$\text{5x+35=50}$
    =>$\text{5x=50-35}$
    =>$\text{5x=15}$
    $\Rightarrow$$\text{x=15:5}$
    $\Rightarrow$$\text{x=3}$
    $\text{KL:Vậy:x=3}$

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

Khánh Ngân

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