x/2+y/3=12/2…………(1)
x/3-y/4=3/2 …………(2)
(1)*18得:
9x+6y=108…………… (3)
(2)*24得:
8x-6y=36………………(4)
(3)+(4)得:
17x=144
x=144/17
将x=144/17代入(1)得:
72/17+y/3=6
y=(6-72/17)*3=18-216/17=90/17
即:x=144/17 y=90/17
x/2+y/3=12/2…………(1)
x/3-y/4=3/2 …………(2)
(1)*18得:
9x+6y=108…………… (3)
(2)*24得:
8x-6y=36………………(4)
(3)+(4)得:
17x=144
x=144/17
将x=144/17代入(1)得:
72/17+y/3=6
y=(6-72/17)*3=18-216/17=90/17
即:x=144/17 y=90/17