(9/8)^x×(9/10)^y×(16/15)^z
= 2 (-3x-y+4z) * 3(2x+2y-z) *5(-y-z)
= 2
解这个方程组
-3x-y+4z = 1
2x+2y-z = 0
-y-z = 0
得到 x=3,y=-2,z= 2
(9/8)^x×(9/10)^y×(16/15)^z
= 2 (-3x-y+4z) * 3(2x+2y-z) *5(-y-z)
= 2
解这个方程组
-3x-y+4z = 1
2x+2y-z = 0
-y-z = 0
得到 x=3,y=-2,z= 2