请教解方程,有没有简便方法
x/28+y/42=17/4x/42+y/28=14/3x=? y=?
参考答案:x/28+y/42=17/4
x/42+y/28=14/3
42x+28y=4998
28x+42y=5488
x+y=149.8
X=57.4
Y=92.4
x/28+y/42=17/4x/42+y/28=14/3x=? y=?
参考答案:x/28+y/42=17/4
x/42+y/28=14/3
42x+28y=4998
28x+42y=5488
x+y=149.8
X=57.4
Y=92.4