Question

Tìm x biết:

x+3 phần 4 = 5-x phần 3

Answer 1

\(x+\frac{3}{4}=5-\frac{x}{3}\)

\(x+\frac{x}{3}=5-\frac{3}{4}\)

\(\frac{4}{3}x=\frac{17}{4}\)

\(x=\frac{17}{4}:\frac{4}{3}\) 

 x = 51/16 

Answer 2

\(\frac{x+3}{4}=\frac{5-x}{3}\)

=> 3(x+3)=4(x-5)

=>   3x+9=4x-20

=>         9=4x-20-3x

=>         9=x-20

=>         x=9+20

=>          x=29