Question

tìm x biết 

7/x = 3/ 12

Answer 1

\(\frac{7}{x}=\frac{3}{12}\)

\(\frac{7}{x}=\frac{1}{4}\)

\(x=7:1x4\)

\(x=28\)

Answer 2

\(\frac{7}{x}=\frac{3}{12}\)

\(\Rightarrow x=7:\frac{3}{12}\)

\(\Rightarrow x=28\)

Ủng hộ mk nkoa!!!

Answer 3

\(\frac{7}{x}=\frac{3}{12}\Rightarrow x=\frac{7\times12}{3}=28\)

Answer 4

\(7\div x=3\div12\)
\(7\div x=0,25\)
\(x=7\div0,25\)
\(x=28\)
 

Answer 5

\(\frac{7}{x}=\frac{3}{12}=\frac{1}{4}\Rightarrow\frac{7}{x}=\frac{1}{4}\)

\(\Rightarrow x=\left(7:1\right)x4=28\)