y50000电影
发布时间: 2024-04-26 08:54:30
Ⅰ x+y=50000 5%x+7.5%y=3000
解:
{x+y=50000 .....(1)
{5%x+7.5%y=3000,即: 5x+7.5y=300000.....(2)
(2)-(1)*5
2.5y=5000
y=20000
x=30000
故,方程组的解:
{ x=30000
{ y=20000
热点内容
Ⅰ x+y=50000 5%x+7.5%y=3000
解:
{x+y=50000 .....(1)
{5%x+7.5%y=3000,即: 5x+7.5y=300000.....(2)
(2)-(1)*5
2.5y=5000
y=20000
x=30000
故,方程组的解:
{ x=30000
{ y=20000