3(X+2)=5X-43X+6=5X-43X-5X=-4-6-2X=-10X=5
3x+3x2=5x-43x+6=5x-43x+6-4=5x3x+(6-4)=5x3x+2=5x5x-3x=2x=1
3x+6+4等于5x2x等于10x等于5
3x+6=5x-45x-4=3x+65x-3x=6+42x=10x=5