U-V=9
U+x=12
V+y=2
X-y=14
Solve for the unknown variables
Please help me to solve this question. Thanks.?
2016-06-24 7:47 pm
回答 (2)
2016-06-24 7:59 pm
✔ 最佳答案
u - v = 9 ...... [1]u + x = 12 ...... [2]
v + y = 2 ...... [3]
x - y = 14 ...... [4]
[1] - [2] + [3] :
(u - v) - (u + x) + (v + y) = 9 - 12 + 2
u - v - u - x + v + y = -1
-x + y = -1
x - y = 1 ...... [5]
[4] and [5] are contradictory. Hence, there is no solution.
2016-06-24 8:05 pm
as typed there is NO solution....2nd - 1st = v + x = 3...subtracting the 3rd from this leaves x - y = 1
收錄日期: 2021-04-18 15:12:37
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20160624114759AAjRo5d