1) x−2=3hoặc2−x=3=>x=5hoặcx=−12) −2x+3x=25−10=>x=153)2x+12=3x−21=>3x−2x=12+21=>x=334) $x-2=-3 hoặc 2-x=-3 => x=-1 hoặc x=5$5) −4x+5x=25−10=>x=156) 2x+12=3x+21=>3x−2x=12−21=>x=−9
1)
x−2=3hoặc2−x=3=>x=5hoặcx=−12)
−2x+3x=25−10=>x=153)
2x+12=3x−21=>3x−2x=12+21=>x=334)
vô ngh
iệm5)
−4x+5x=25−10=>x=156)
2x+12=3x+21=>3x−2x=12−21=>x=−9