2x-10=15x+30,6x-6=6x+2,9-3x=2x-8,5x=9x-50 ,5y-5=12-6y,15x-9=7x31最好的给补充财富和评满意答案.2题是9x-3(x-2)=6x+2

问题描述:

2x-10=15x+30,6x-6=6x+2,9-3x=2x-8,5x=9x-50 ,5y-5=12-6y,15x-9=7x31
最好的给补充财富和评满意答案.
2题是9x-3(x-2)=6x+2