Question

3x+2y/4 = x+5y/-3 = 2x+y+2/5

用适当方法解此方程组。 要过程。 谢谢。、

Answer 1

3x+2y/4 = x+5y/-3 = 2x+y+2/5
3x+2y/4 = x+5y/-3 x=5y/-6 -y/4=-13y/12
x+5y/-3 = 2x+y+2/5 x+5y/-3=y+2/5 x=y+5y/3+2/5=8y/3+2/5
8y/3+2/5=-13y/12
15y/4=-2/5
y=-8/75
x=26/225

Answer 2

3x+2y/4 = x+5y/-3 = 2x+y+2/5
则：3x+2y/4 = x+5y/-3
3x+2y/4 = 2x+y+2/5
整理得：x+13y/12 = 0 (1)
x-y/2 -2/5= 0 (2)
(1)-(2)得 19y/12+2/5=0
得 y=-24/95 代入（1）中得：x=26/95