Algebra help?
回答 (2)
2017-08-30 11:19 am
-6x + (32/5)y = 112 …… [1]
6x + (21/10)y = -27 …… [2]
[1] + [2]:
(32/5)y + (21/10)y = 112 - 27
(64/10)y + (21/10)y = 112 - 27
(85/10)y = 85
y = 85 * (10/85)
y = 10
The answer: y = 10
6x + (21/10)y = -27 …… [2]
[1] + [2]:
(32/5)y + (21/10)y = 112 - 27
(64/10)y + (21/10)y = 112 - 27
(85/10)y = 85
y = 85 * (10/85)
y = 10
The answer: y = 10
2017-08-30 11:08 am
Add the two equations so that you end up with 0x.
Then it's a one-variable equation to solve for y.
Then it's a one-variable equation to solve for y.
收錄日期: 2021-04-18 17:46:10
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https://hk.answers.yahoo.com/question/index?qid=20170830030445AAUg8cg