1) $x-2=3 hoặc 2-x=3 => x=5 hoặc x=-1$2) $-2x+3x=25-10 => x=15$3)$2x+12=3x-21 => 3x-2x=12+21 => x=33$4) vô nghiệm5) $-4x+5x=25-10=> x=15$6) $2x+12=3x+21=> 3x-2x=12-21=> x=-9$
1) $x-2=3 hoặc 2-x=3 => x=5 hoặc x=-1$2) $-2x+3x=25-10 => x=15$3)$2x+12=3x-21 => 3x-2x=12+21 => x=33$4) $x-2=-3 hoặc 2-x=-3 => x=-1 hoặc x=5$5) $-4x+5x=25-10=> x=15$6) $2x+12=3x+21=> 3x-2x=12-21=> x=-9$
1) $x-2=3 hoặc 2-x=3 => x=5 hoặc x=-1$2) $-2x+3x=25-10 => x=15$3)$2x+12=3x-21 => 3x-2x=12+21 => x=33$4)
vô ngh
iệm5) $-4x+5x=25-10=> x=15$6) $2x+12=3x+21=> 3x-2x=12-21=> x=-9$