{4x+7y+7=3x+2y+4,5x+y+1=6x-1解方程租
问题描述:
{4x+7y+7=3x+2y+4,5x+y+1=6x-1解方程租
答
原方程组即为:x+5y=-3,-x+y=-2.相加得6y=-5,y=-5/6,代入得x=7/6
{4x+7y+7=3x+2y+4,5x+y+1=6x-1解方程租
原方程组即为:x+5y=-3,-x+y=-2.相加得6y=-5,y=-5/6,代入得x=7/6