解方程组⑴(x+y)/2-(x-y)/3=6,⑵3(x+y)=4(x-y)

问题描述:

解方程组⑴(x+y)/2-(x-y)/3=6,⑵3(x+y)=4(x-y)

(x+y)/2-(x-y)/3=6
3(x+y)=4(x-y)
x=21
y=3