方程组:(1)2a+5b=8,3a+2b=5,(2)2x+3y=6,-3y+4x+2=0

问题描述:

方程组:(1)2a+5b=8,3a+2b=5,(2)2x+3y=6,-3y+4x+2=0

a=9/11,b=14/11
x=2/3,y=14/9