Question

Tìm x :

x+x:0,25+x:0,5+x:0,125=0,45

Mong các bn trả lời nhanh giúp mik với

Answer 1

\(x+x:0,25+x:0,5+x:0,125=0,45\)

\(\Rightarrow x+x:\dfrac{1}{4}+x:\dfrac{1}{2}+x:\dfrac{1}{8}=0,45\)

\(\Rightarrow x+4x+2x+8x=0,45\)

\(\Rightarrow15x=0,45\)

\(\Rightarrow x=0,3\)

Vậy x = 0,3

Answer 2

\(x+x:0.25+x:0.5+x:0.125=0.45\)

\(x+x:\dfrac{1}{4}+x:\dfrac{1}{2}+x:\dfrac{1}{8}=\dfrac{9}{20}\)

\(x+4x+2x+8x=\dfrac{9}{20}\)

\(15x=\dfrac{9}{20}\)

\(x=\dfrac{9}{20}:15\)

\(x=\dfrac{9}{20}\cdot\dfrac{1}{15}\)

\(x=0.03\)

Vậy \(x=0.03\).