解方程组:(x-1)/3-(y+2)/4=2,(x-3)/4-(y-3)/3=1/12.
问题描述:
解方程组:(x-1)/3-(y+2)/4=2,(x-3)/4-(y-3)/3=1/12.
答
x142/7 y110/7过程... ...乘12得4x-3y=34a3x-4y=-2 b a-b的x y=36 c 4c-a的y=110/7带入c的x=142/7