问题描述:
用加减法解方程组2(X+Y)-3(X-Y)=36;3(X+Y)+2(X-2Y)=-12
这道题是我乘过的,原题是(X+Y)/3-(X-Y)/2=36;3(X+Y)+2(X-2Y)=-12
这道题是我乘过的,原题是(X+Y)/3-(X-Y)/2=36;3(X+Y)+2(X-2Y)=-12
问题解答:
我来补答展开全文阅读