Question

Tìm x, biết :

\(2x+5\left(x-\frac{1}{2}\right)=1\)

Answer 1

\(\Rightarrow2x+5x-\frac{5}{2}=1\)

\(\Rightarrow7x=1+\frac{5}{2}\)

\(\Rightarrow7x=\frac{7}{2}\)

\(\Rightarrow x=\frac{1}{2}\)

Vậy x=1/2

Answer 2

\(=>2x+5x-\frac{5}{2}=1\\ =>7x=1+\frac{5}{2}\\ =>7x=\frac{7}{2}\\ =>x=\frac{1}{2}\)