解:2x+5x-10=60 2x+5x=60+10 7x=70 x=10
2x+5(x-2)=602x+5x-10=602x+5x=10+607x=70x=10 不懂可追问,有帮助请采纳,谢谢!
去括号,得2x+5x-10=60即7x=70解得x=10
2X+5X-10=607X=60+10 7X=70 X=10
2x+5(x-2)=602X+5X-10=602X+5X=60+107X=70X=10