Question

a)8 : ( 1/4x)= 2:0,02
b)3: 2 1/4=3/4 : ( 6.x)

giải giúp mình với

Answer 1

ok nhưng nhớ tích nhé

Answer 2

\(a,8:\left(\dfrac{1}{4}x\right)=2:0,02\)

\(8:\left(\dfrac{1}{4}x\right)=100\)

\(\dfrac{1}{4}x=100.8\)

\(\dfrac{1}{4}x=800\)

\(\Rightarrow x=...\)

Answer 3

Answer 4

Answer 5

\(b,\dfrac{21}{4}=\dfrac{3}{4}:\left(6.x\right)\)

\(\dfrac{21}{4}.\dfrac{3}{4}=6.x\)

\(\dfrac{64}{16}=6.x\)

\(\dfrac{64}{16}:6=x\)

\(\Rightarrow x=...\)

Answer 6

a: Ta có: \(8:\left(\dfrac{1}{4}x\right)=2:0.02\)

\(\Leftrightarrow x\cdot\dfrac{1}{4}=\dfrac{8}{100}=\dfrac{2}{25}\)

hay \(x=\dfrac{2}{25}:\dfrac{1}{4}=\dfrac{8}{25}\)

b: Ta có: \(3:2\dfrac{1}{4}=\dfrac{3}{4}:\left(6x\right)\)

\(\Leftrightarrow\dfrac{3}{4}:6x=3:\dfrac{9}{4}=3\cdot\dfrac{4}{9}=\dfrac{4}{3}\)

\(\Leftrightarrow6x=\dfrac{3}{4}:\dfrac{4}{3}=\dfrac{9}{16}\)

hay \(x=\dfrac{3}{32}\)