Question

a)\(\dfrac{5}{2}:\dfrac{x}{6}=5:0,2\)

b)\(2\dfrac{3}{4}.x=3\dfrac{1}{7}:0.01\)

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Answer 1

Tìm x, biết:

a, \(\dfrac{5}{2}:\dfrac{x}{6}=5:0,2\)

\(\dfrac{5}{2}.\dfrac{6}{x}=\dfrac{5}{0,2}=\dfrac{25}{1}\)

\(\dfrac{5}{1}.\dfrac{3}{x}=\dfrac{25}{1}\)

\(\dfrac{3}{x}=\dfrac{25}{1}.\dfrac{1}{5}\)

\(\dfrac{3}{x}=\dfrac{5.1}{1.1}=5\)

\(3:x=5\)

\(x=3:5=0,6\)

Vậy x = 0,6

Answer 2

b: =>11/4*x=22/7:1/100=22/7*100=2200/7

=>x=2200/7:11/4=800/7

a: \(\Leftrightarrow\dfrac{5}{2}\cdot\dfrac{6}{x}=5\cdot5=25\)

=>30/2x=25

=>2x=6/5

=>x=3/5