{x一5=y+2 xy=(x一5)x(y+2) 此乃二元一次方程求过程求解.
问题描述:
{x一5=y+2 xy=(x一5)x(y+2) 此乃二元一次方程求过程求解.
答
y=x-7 (x-7)x=(x-5)(x-7+2) 解解看
{x一5=y+2 xy=(x一5)x(y+2) 此乃二元一次方程求过程求解.
y=x-7 (x-7)x=(x-5)(x-7+2) 解解看