50/(x+2)=40/(x-2)

来源:学生作业帮助网 编辑:作业帮 时间:2024/11/15 11:02:42
50/(x+2)=40/(x-2)
x)35ר6Ҵ51t4mRdǒv>9,lJPqXРl ۀ98~Ock̷5TZhb5\Cz

50/(x+2)=40/(x-2)
50/(x+2)=40/(x-2)

50/(x+2)=40/(x-2)
两边乘(x+2)(x-2)
50x-100=40x+80
10x=180
x=18

50/(x+2)=40/(x-2)
5(x-2)=4(x+2)
5x-10=4x+8
5x-4x=8+10
x=18