Question

x+7/2x+x= 97/4
tìm x 

Answer 1

x + 7/2 x + x = 97/4 

=> x . [ 1+7/2+1] = 97/4 

=> x . 11/2 = 97/4

=> x = 97/4 : 11/2 = 97/22

đúng nha

Answer 2

\(\frac{x+7}{2x+x}=\frac{97}{4}\)

\(\frac{x+7}{x\left(2+1\right)}=\frac{97}{4}\)

=> \(\frac{x}{x\left(2+1\right)}+\frac{7}{x\left(2+1\right)}=\frac{97}{4}\)

=>\(\frac{1}{3}+\frac{7}{x.3}=\frac{97}{4}\)

\(\frac{7}{x.3}=\frac{97}{4}-\frac{1}{3}\)

\(\frac{7}{x.3}=\frac{287}{12}\)

=> \(x.3=\frac{12.7}{287}\)

\(x.3=\frac{12}{41}\)

\(x=\frac{12}{41}:3\)

\(x=\frac{4}{41}\)