Question

(1.25-3/7.x)(-5/4x+14/9)=0
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Answer 1

`(1.25-3/7.x)(-5/4x+14/9)=0`

`<=> [(1.25-3/7x =0),(-5/4x+14/9 =0):}`

`<=> [(3/7x = 25),(-5/4x = -14/9):}`

`=> [(x= 25 : 3/7 = 25*7/3),(x= -14/9 : (-5/4) ) :}`

`<=> [(x=175/3),(x=56/45):}`

 

Answer 2

`<=>` \(\left[{}\begin{matrix}1,25-\dfrac{3}{7}x=0\\-\dfrac{5}{4}x+\dfrac{14}{9}=0\end{matrix}\right.\)

`<=>` \(\left[{}\begin{matrix}x=\dfrac{35}{12}\\x=\dfrac{56}{45}\end{matrix}\right.\)