2x -1 =2
2x=2 +1
2x = 3
x = 3:2
x =3/2
\(2.x-1=2\)
\(x-1=1\)
\(x=1-1\)
\(x=0\)
k mik nhé
2x-1=2
<=>2x=2+1
<=>2x=3
<=>x=3/2.
\(2x-1=2\Rightarrow2x=2+1\)
\(2x=3\Rightarrow x=3:2\)
\(x=\frac{3}{2}\)
\(2.x-1=2\)
\(\Rightarrow2.x\)\(=2+1\)
\(\Rightarrow2.x\)\(=3\)
\(\Rightarrow x\) \(=\frac{3}{2}\)
Vậy \(x=\frac{3}{2}\)
2.x - 1 = 2
2.x = 1 + 2
2.x = 3
x = 3 : 2
x = 3/2
=> x = 3/2