解(x+3)÷2=6即(x+3)×1/2=6即x+3=12即x=9
(x+3)÷2=6x+3=6×2x+3=12x=12-3x=9祝你开心
(x+3)÷2=6x+3=2*6x+3=12x=12-3x=9
X+3=6×2X+3=12X=12-3X=9