1/3x + 2/5 . ( x - 1 ) = 0
1/3x + 2/5x - 2/5 . 1 = 0
x . ( 1/3 + 2/5 ) - 2/5 = 0
x . 11/15 = 0 + 2/5
x . 11/15 = 2/5
x = 2/5 : 11/15
x = 6/11
#Louis
( 2x - 3 )(6 - 2x ) = 0
=> 2x - 3 = 0 , 6 - 2x = 0
+) 2x - 3 = 0
2x = 0 + 3
2x = 3
x = 3/2
+) 6 - 2x = 0
2x = 6 + 0
2x = 6
x = 6 : 2 = 3
Vậy...
#Hoq chắc _ Louis
\(\frac{1}{3}x+\frac{2}{5}\cdot\left(x-1\right)=0\)
\(\frac{1}{3}x+\frac{2}{5}x-\frac{2}{5}=0\)
\(\frac{1}{3}x+\frac{2}{5}x=0+\frac{2}{5}\)
\(\frac{11}{15}x=\frac{2}{5}\)
\(x=\frac{2}{5}\div\frac{11}{15}\)
\(x=\frac{6}{11}\)
\(\left(2x-3\right)\left(6-2x\right)=0\)
\(2x-3=0\)
\(2x=0+3\)
\(2x=3\)
\(x=3\div2\)
\(x=\frac{3}{2}\)
hoặc
\(6-2x=0\)
\(2x=6-0\)
\(2x=6\)
\(x=6\div2\)
\(x=3\)
