Question

\(\dfrac{3}{X+5}=15\%\)

Answer 1

3/(x+5) = 15%

3/(x+5) = 3/20

x+5      = 20

x          = 20-5

x          = 15

Answer 2

\(\dfrac{3}{x+5}=15%\)%

\(\dfrac{3}{x+5}=\dfrac{3}{20}\)

\(x = \dfrac{3}{20-5}\)

\(x= \dfrac{3}{15}\)

Answer 3

Giải:

3/x+5=15%

3/x+5=3/20

=>(x+5).3=3.20

      3x+15=60

       3x      =60-15

       3x      =45

         x      =45:3

         x      =15

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Answer 4

\(\dfrac{3}{x+5}=15\%\)

\(\Leftrightarrow\dfrac{3}{x+5}=\dfrac{3}{20}\)

\(\Rightarrow\dfrac{3}{x}=\dfrac{3}{20-5}=\dfrac{3}{15}\)

\(\Rightarrow x=15\)