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

Toán Lớp 6: Tìm x,biết 36+2(x-13)=50 Tìm ƯCLN(224,240). Giúp mik toán lớp 6

Toán Lớp 6: Tìm x,biết 36+2(x-13)=50
Tìm ƯCLN(224,240).
Giúp mik toán lớp 6

Comments ( 2 )

  1. $\text{36 + 2( x – 13 ) = 50}$
    $\text{2( x – 13 ) = 50 – 36}$
    $\text{2( x – 13 ) = 14}$
    $\text{x – 13 = 14 : 2}$
    $\text{x – 13 = 7}$
    $\text{x = 7 + 13}$
    $\text{x = 20}$
    $\text{Bài 2:}$
    $\text{224 = 2. 112 = 2. 8. 14 = $2^{4}$. 2. 7 = $2^{5}$. 7}$
    $\text{240 = 8. 30 = 2³. 3. 10 = 2³. 3. 2. 5 = $2^{4}$. 3. 5}$
    $\text{ƯCLN ( 224; 240 ) = $2^{4}$ = 16}$
    $\text{⇒ ƯCLN( 224; 240 ) = 16}$

  2. Giải đáp+Lời giải và giải thích chi tiết:
    36+2(x-13)=50
    2(x-13)=50-36
    2(x-13)=14
    x- 13=14:2
    x-13=7
    x=13+7
    x=20
    224=2^5 .7
    240=2^4. 3. 5
    =>ƯCLN(224;240)=2^4=16

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