> 数学 >
x-3y/3-1/3=1 2x-x-3y/4=5二元一次方程组怎么解
=、
人气:492 ℃ 时间:2020-04-09 09:27:15
解答
(x-3y)/3 - 1/3 = 1
x-3y-1 = 3
x-3y = 4(1)
2x - (x-3y)/4 = 5
8x - x + 3y = 20
7x + 3y = 20(2)
(1) + (2)
8x = 24
x = 3
y = -1/3
推荐
猜你喜欢
© 2024 79432.Com All Rights Reserved.
电脑版|手机版