a, X:0.25+X x 11=24

X x 4 + X x 11 = 24

X x (11 + 4) = 24

X x 15 = 24

X = 24 : 15

X = 1,6

b, X x 8.01-X: 100=38

X x 8,01 - X x 0,01 = 38

X x (8,01 - 0,01) = 38

X x 8 = 38

X = 38 : 8

X = 4,75`

a, X:0.25+X x 11=24

X x 4 + X x 11 = 24

X x (11 + 4) = 24

X x 15 = 24

X = 24 : 15

X = 1,6

b, X x 8.01-X: 100=38

X x 8,01 - X x 0,01 = 38

X x (8,01 - 0,01) = 38

X x 8 = 38

X = 38 : 8

X = 4,75

(600-X)x4=100x4

Chia cả 2 vế cho 4, ta được:

600-X=100

     X=600-100

     X=500

Vậy X=500

Ta có:

\(x:0,25+x.11=24\)

\(x.4+x.11=24\)

\(x\left(4+11\right)=24\)

\(x.15=24\)

\(x=1,6\)

\(x:0,25+x.11=24\)

<=> \(x:\frac{1}{4}+x.11=24\)

<=> \(x.4+x.11=24\)  <=> \(x.\left(4+11\right)=24\)

                                                 <=> \(15x=24\) <=>\(x=\frac{24}{15}\)

vậy \(x=\frac{24}{15}\)

( 21x 12 -x -0,75 ) : 0,25 =100: 0,25

(21 x12- x- 0,75) : 0,25= 400

 21 x12 -x-0,75 =  400 x0,25

 21 x12- x- 0,75= 100

 252- x= 100 + 0,75

 252-x=  100,75

  x         = 252- 100,75

 x           = 151,25

\(x:0,125+x:0,25-x:20\%-24=11\)

\(x:\dfrac{1}{8}+x:\dfrac{1}{4}-x:\dfrac{1}{5}-24=11\)

\(8\times x+4\times x-5\times x-24=11\)

\(7\times x=35\)

\(x=5\)

\(\text{x : 0 , 125 + x : 0 , 25 − x : 20 % − 24 = 11}\)

\(x : 0 , 125 + x : 0 , 25 − x : 0 , 2 − 24 = 11\)

\(x:\dfrac{1}{8}+x:\dfrac{1}{4}-x:\dfrac{1}{5}-24=11\)

\(x:\dfrac{1}{8}+x:\dfrac{1}{4}-x:\dfrac{1}{5}=24+11\)

\(x:\dfrac{1}{8}+x:\dfrac{1}{4}-x:\dfrac{1}{5}=35\)

\(\text{x ×}\dfrac{8}{1}+x\text{×}\dfrac{ }{ }+\dfrac{4}{1}-x\text{×}\dfrac{5}{1}=35\)

\(x × 8 + x × 4 − x × 5 = 35\)

\(x × ( 8 + 4 − 5 ) = 35\)

\(x × 7 = 35\)

\(x = 35 : 7\)

\(x = 5\)

x : 0,25 + x nhân 11 = 24

x nhân 4 + x nhân 11 = 24

x nhân ( 4 + 11 ) = 24

x nhân 15 = 24 

x              = 24 ; 15 

x              = 1,6

vậy x = 1,6 nha

X:0,25+Xx11=24

Xx4+Xx11=24

Xx(4+11)=24

Xx15=24

X=24:15

X=1,6