X+X:0,5+X:0,25+X:0,125=5
X+X x 2+ X x 4 + X x 8 =5
X x (1+2+4+8)=5
X x 15 =5
X=5 : 15
X=\(\frac{1}{3}\)
Vậy X=\(\frac{1}{3}\)
x + x : 0,5 + x : 0,25 + x : 0,125 = 5
=> x + x . 2 + x . 4 + x . 8 = 5
=> x(1 + 2 + 4 + 8) = 5
=> x.15 = 5
=> x = 5 : 15
=> x = 1/3
#)Giải :
\(x+x:0,5+x:0,25+x:0,125=5\)
\(x+x.2+x.4+x.8=5\)
\(x.\left(1+2+4+8\right)=5\)
\(x.15=5\)
\(x=5:15\)
\(x=\frac{5}{15}=\frac{1}{3}\)
#)Chú ý : Dấu ''.'' là dấu ''x'' nha, cấp hai thì viết như v
#~Will~be~Pens~#
X+X:0,5+X:0,25+X:0,125=5
=> X+Xx2+Xx4+Xx8=5
Xx1+Xx2+Xx4+Xx8=5
Xx(1+2+4+8)=5
Xx15=5
X =5:15
X=1/3
Vậy X=1/3
các bn nhớ k cho mk nha
x + x : 0,5 + x : 0,25 + x : 0,125 = 5
x + x . 2 + x . 4 + x . 8 = 5
x . ( 1 + 2 + 4 + 8 ) = 5
x . 15 = 5
x = 5 : 15
x = 1/3
\(x+x:0,5+x:0,25+x:0,125=5\)
\(\Leftrightarrow x+x.\frac{1}{2}+x.\frac{1}{4}+x.\frac{1}{8}=5\)
\(\Leftrightarrow x.\left(1+\frac{1}{2}+\frac{1}{4}+\frac{1}{8}\right)=5\)
\(\Leftrightarrow x.\frac{15}{8}=5\Rightarrow x=5:\frac{15}{8}=\frac{8}{3}.\)
\(x+x\div0,5+x\div0,25+x\div0,125=5\)
\(x+x\times2+x\times4+x\times8=5\)
\(x\times\left(1+2+4+8\right)=5\)
\(x\times15=5\)
\(x=5\div15\)
\(x=\frac{1}{3}\)
Vậy \(x=\frac{1}{3}\)
\(x+x:0,5+x:0,25+x:0,125=5\)
\(x\times1+x\times\frac{1}{2}+x\times\frac{1}{4}+x\times\frac{1}{8}=5\)
\(x\times\left(1+\frac{1}{2}+\frac{1}{4}+\frac{1}{8}\right)=5\)
\(x\times\frac{15}{8}=5\)
\(x=5:\frac{15}{8}\)
\(x=\frac{8}{3}\)
~ Hok tốt ~
