10(8y-x)=6(12y-x)=t(14y-x)

问题描述:

10(8y-x)=6(12y-x)=t(14y-x)
t是多少

从方程10(8y-x)=6(12y-x)中先解得x与y的关系为x=2y.
10(8y-x)=t(14y-x)
(80-14t)y=(10-t)x
x/y=(80-14t)/(10-t)=2,解得t=5