求解方程(y-6)/x = 21,y+x = 31

求解方程(y-6)/x = 21,y+x = 319-21-6详细分解!

1个回答

(y-6)/x = 21,则y=21x+6①
y+x = 319-21-6,则y+x=292②
将①代入②,得21x+6+x=292,解得x=13
代入①,解得y=279