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If 4x − 3y = 13 and 5x + 2y = −1, then x =
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20 Nov 2017, 11:13
20 Nov 2017, 11:13
00:00
Question Stats:
95% (00:57) correct
4% (01:37) wrong based on 21 sessions
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If 4x − 3y = 13 and 5x + 2y = −1, then x =
A. −3
B. −1
C. 1
D. 3
E. 5
Kudos for correct solution.
A. −3
B. −1
C. 1
D. 3
E. 5
Kudos for correct solution.
Re: If 4x − 3y = 13 and 5x + 2y = −1, then x =
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01 Dec 2017, 21:57
01 Dec 2017, 21:57
1
Bunuel wrote:
If 4x − 3y = 13 and 5x + 2y = −1, then x =
A. −3
B. −1
C. 1
D. 3
E. 5
Kudos for correct solution.
A. −3
B. −1
C. 1
D. 3
E. 5
Kudos for correct solution.
Here it can be written as
4x − 3y = 13 or 8x - 6y = 26 (multiplying by 2)
5x + 2y = −1 or 5x + 6 y = -3 (multiplying by 3)
Now adding the two equation we get
23x = 23
or x = 1
If 4x − 3y = 13 and 5x + 2y = − 1, then x =
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06 Nov 2018, 05:46
06 Nov 2018, 05:46
Expert Reply
If 4x − 3y = 13 and 5x + 2y = − 1, then x =
A. − 3
B. − 1
C. 1
D. 3
E. 5
A. − 3
B. − 1
C. 1
D. 3
E. 5
