12+47x=1247x=12-1247x=0x=012÷2x=62x=12÷62x=2x=2÷2x=1祝你学习进步,有不明白的可以追问!谢谢!!
12+47x=1247x=0x=0 12÷2x=612=12xx=1 不明白可追问,满意请采纳
47x=0x=02x=2x=1
12 + 47x = 1247x = 0x = 012 ÷ 2x = 612x = 12x = 1