解方程组:(3x+2y)/3=(5x+3y)/4=-1
问题描述：
解方程组:(3x+2y)/3=(5x+3y)/4=-1
答
(3x+2y)/3=-1 =>3x+2y=-3 (1)
(5x+3y)/4=-1 =>5x+3y=-4 (2)
(1)*3 -(2)*2得：
9x-10x=-9+8
-x=-1
x=1,代入(1)解得y=-3