Question

4-x/5=-5/4-x

Answer 1

\(4-\dfrac{x}{5}=-\dfrac{5}{4}-x\)

\(\dfrac{80}{20}-\dfrac{4x}{20}=-\dfrac{25}{20}-\dfrac{20x}{20}\)

\(=>80-4x+25+20x=0\)

\(105+16x=0\)

\(16x=-105\)

\(x=-\dfrac{105}{16}\)

Vậy....

 

Answer 2

8020−4x20=−2520−20x208020−4x20=−2520−20x20

Answer 3

Theo bài ra, ta có:

\(4-\dfrac{x}{5}=\dfrac{5}{4}-x\)

\(\Leftrightarrow20-x=6,25-5x\)

\(\Leftrightarrow20-6,25=-5x+x\)

\(\Leftrightarrow-4x=13,75\)

\(\Leftrightarrow x=-3,4375\)

Vậy x= -3,4375