Question

[Lê Kiều Trinh]

a) (5x-1) . ( 2x-1/3)=0

b) ( -0,6x-1/2) .3/4-(-1)=1/3

c) ( 4x-9) ( 2,5+-7/3x)=0

d) 1/4x-1+1/3.(5/2x-6)-( 3/8x +)=4,5

Answer 1

[Lê Kiều Trinh]

mình cần khá gấp nhe

Answer 2

[nguyễn thị ánh nguyệt]

\(\left(5x-1\right)\left(\frac{2x-1}{3}\right)=0\)

\(\Leftrightarrow\left(\frac{\left(5x-1\right)\left(2x-1\right)}{3}\right)=0\)

\(\Leftrightarrow\left(5x-1\right)\left(2x-1\right)=0\)

\(\Rightarrow\orbr{\begin{cases}5x-1=0\\2x-1=0\end{cases}}\)\(\Rightarrow\orbr{\begin{cases}x=\frac{1}{5}\\x=\frac{1}{2}\end{cases}}\)

Vậy \(x=\frac{1}{5}\)hoặc\(x=\frac{1}{2}\)