楼主给出的1/4X+7/4Y=2,是(1/4)X+(7/4)Y=2?还是1/(4X)+7/(4Y)=2?
如果是前者:
解1:
(1/4)X+(7/4)Y=2
(7/4)Y=2-(1/4)X
Y=(4/7)[2-(1/4)X]
Y=8/7-(1/7)X
Y=8/7-X/7
解2:
2(3Y-3)=6X+4
6Y-6=6X+4
6Y=6X+10
Y=X+5/3
楼主给出的1/4X+7/4Y=2,是(1/4)X+(7/4)Y=2?还是1/(4X)+7/(4Y)=2?
如果是前者:
解1:
(1/4)X+(7/4)Y=2
(7/4)Y=2-(1/4)X
Y=(4/7)[2-(1/4)X]
Y=8/7-(1/7)X
Y=8/7-X/7
解2:
2(3Y-3)=6X+4
6Y-6=6X+4
6Y=6X+10
Y=X+5/3