Tìm x biết 5x-2/3 = 5-3x/2 Question Tìm x biết 5x-2/3 = 5-3x/2 in progress 0 Môn Toán Khải Quang 6 years 2020-11-25T19:11:32+00:00 2020-11-25T19:11:32+00:00 2 Answers 91 views 0
Answers ( )
$\dfrac{5x-2}{3}=\dfrac{5-3x}{2}$
$↔(5x-2).2=3.(5-3x)$
$↔10x-4=15-9x$
$↔10x-4-15+9x=0$
$↔19x-19=0$
$↔19x=19$
$↔x=1$
`=> 2(5x-2)=3(5-3x)`
`=> 10x-4=15-9x`
`=> 10x+9x=15+4`
`=> 19x=19`
`=> x=19:19=1`