=>x+2x+4x+8x=15

=>15x=15

=>x=1

\(x+x:0,5+x:0,25+x:0,125=15\)

\(x+x:\dfrac{1}{2}+x:\dfrac{1}{4}+x:\dfrac{1}{8}=15\)

\(x+x\times2+x\times4+x\times8=15\)

\(x\times\left(1+2+4+8\right)=15\)

\(x\times15=15\)

\(x=15:15\)

\(x=1\)

x + x : 0,5 + x : 0,25 + : 0,125 = 15

dấu + hay :

=>x+2x+4x+8x=15

=>15x=15

hay x=1

X : (1 + 0,5 + 0,25 + 0,125) = 15

X : 1,875 = 15

X = 15 x 1,875 

X = 28,125

x+x:0.5+x:0,25+x:0,125=15

x+(x:0,5+x:0,25+x:0,125)=15

x+x:(0,5+0,25+0.125)=15

x+x:0,875=15

x+x=15.0,875

x+x=13125

2x=13125

x=13125:2

x=6,562.5

\(X+X\div5+X\div0,25+X\div0,125=15\)

\(X\div\left(1+0,5+0,25+0,125\right)=15\)

\(X\div1,875=15\)

                  \(X=15\times1,875\)

                  \(X=28,125\)

                                           Vậy X=28,125

x + x : 0,5 + x : 0,25 + x : 0,125 = 15

X + X : \(\frac{1}{2}\)+ X : \(\frac{1}{4}\)+ X :\(\frac{1}{8}\)= 15

X + X x  2  + X x 4 + X x8 =15

X x (1+2+4+8) = 15

X x 15 = 15

x = 15 : 15

x =1

Tk mình nha!!

~Shizadon~

X + X : 0,5 + X : 0,25 + X : 0,125 = 15

X x 1 + X x 2 + X x 4 + X x 8 = 15

X x [ 1 + 2 + 4 + 8 ] = 15

X x 15 = 15

=> X = 15 : 15 = 1

x + x = 15

2 * x = 15

x = 7,5

0,5 + x : 0,25 + x : 0,125 = 15

0,5 + x * 4 + x* 8 = 15

x * ( 4 + 8) = 14,5

x * 12 = 14,5

x  = 29/24

29/24 nha bạn

x+x:0,5+x:0,25+x:0,125=15

(=)\(x+x.2+x.4+x.8=15\)

(=)x.(1+2+4+8)=15

(=)x.15=15

(=)x=1

=>x+0,5x+0,25x+0,125x=3,75

=>x=2

x=2

a,

\(x+x:0,5+x:0,25+x:0,125=15\\ x+x:\dfrac{1}{2}+x:\dfrac{1}{4}+x:\dfrac{1}{8}=15\\ x+2x+4x+8x=15\\ x\left(1+2+4+8\right)=15\\ 15x=15\\ x=1\)

1 nha

HT

1 nhaaaaaaa

1 nha k mình nha