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

Toán Lớp 9: 5 = 3x-2 3/7 = 5/x 2,5 = x/6 175 = 27-100-27-150÷x 29 = 12- 3/500 nhân x 5=3x-8 32=1,8x +32 150 = 3,14×3^2nhân x ÷360 35 = 1/3×3 n

Tháng Hai 12, 2023 Toán học 1 Comment 0 views

Toán Lớp 9: 5 = 3x-2
3/7 = 5/x
2,5 = x/6
175 = 27-100-27-150÷x
29 = 12- 3/500 nhân x
5=3x-8
32=1,8x +32
150 = 3,14×3^2nhân x ÷360
35 = 1/3×3 nhân x

Comments ( 1 )

  1. thaolanphuobg
    thaolanphuobg
    12 Tháng Hai, 2023 at 3:41 chiều
    Reply
    $5=3x-2$
    ⇔$3x=5+2$
    ⇔$3x=7$
    ⇔$x=$ $\frac{7}{3}$ 
    Vậy $S=$ ${\frac{7}{3}}$ 
    $\frac{3}{7}=$ $\frac{5}{x}$
    ⇔$3x=5.7$
    ⇔$3x=35$
    ⇔$x=$ $\frac{35}{3}$ 
    Vậy $S=$ ${\frac{35}{3}}$
    $2,5=$ $\frac{x}{6}$
    ⇔ $\frac{5}{2}=$ $\frac{x}{6}$
    ⇔ $2x=30$
    ⇔ $x=15$
    Vậy $S=$ ${15}$
    $175 = 27-100-27-150:x$
    ⇔$175=-100-$ $\frac{150}{x}$
    ⇔$275=$ $-\frac{150}{x}$
    ⇔$275x=-150$
    ⇔$x=$ $-\frac{6}{11}$
    Vậy $S=$ ${-\frac{6}{11}}$
    $29 = 12-$ $\frac{3}{500}.x$ 
    ⇔ $-\frac{3}{500}.x=17$ 
    ⇔$x=$ $-\frac{8500}{3}$ 
    Vậy $S=$ ${-\frac{8500}{3}}$ 
    $5=3x-8$
    ⇔$3x=13$
    ⇔$x=$ $\frac{13}{3}$ 
    Vậy $S=$ $\frac{13}{3}$ 
    $32=1,8x +32 $
    ⇔$1,8x=0$
    ⇔$x=0$
    Vậy $S={0}$
    $150 = 3,14×3^2 . x :360$
    ⇔$150=9x+\frac{157}{18000}$
    ⇔$9x=150-\frac{157}{18000}$
    ⇔$x≈16,67$
    Vậy $S={16,57}$
    $35 =\frac{1}{3}×3. x$
    ⇔$3x=\frac{104}{3}$
    ⇔$x=$ $\frac{104}{9}$ 
    Vậy $S=$b$\frac{104}{9}$ 
    $chucbanhoktot$
    $xinhaynhat$
    $Sói$

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

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