来自宋德舜的问题
3(x+y)+2(x-y)=364(x+y)-5(x-y)=2解方程组
3(x+y)+2(x-y)=364(x+y)-5(x-y)=2解方程组
1回答
2020-05-30 14:57
3(x+y)+2(x-y)=364(x+y)-5(x-y)=2解方程组
3(x+y)+2(x-y)=364(x+y)-5(x-y)=2解方程组
5x+y=369y-x=2
即45y-10+y=36
y=1
x=7