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April 24, 2024, 01:33:28 pm
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Author Topic: Simultaneous equations help  (Read 1430 times)  Share 

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sameeraaa1

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Simultaneous equations help
« on: March 22, 2017, 03:42:29 pm »
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Can somebody please solve this for me:

5s - 3t - 13 = 0
3s - 7t - 13 = 0



Thank you!!
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zxcvbnm18

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Re: Simultaneous equations help
« Reply #1 on: March 22, 2017, 04:35:18 pm »
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Quote from: sameeraaa1 on March 22, 2017, 03:42:29 pm
Can somebody please solve this for me:

5s - 3t - 13 = 0
3s - 7t - 13 = 0



Thank you!!

S=2 t= -1



5s - 3t = 13 ------> multiply by 3
3s - 7t = 13---------> multiple by 5

15s - 9t = 39 
15s - 35t = 65

Substract the first equation  from the second equation

24t = -24t -----> divide both sides by 24
 

T = -1

Then sub t = -1 into o
One of the  two original equations


5s -3 (-1) - 13 = 0
5s - 10 = 0
S= 2
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sameeraaa1

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Re: Simultaneous equations help
« Reply #2 on: March 22, 2017, 04:50:16 pm »
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Thank you! :)
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HSC '17 -
English Advanced
English Extension 1
Legal Studies
Modern History
History Extension
Studies of Religion 1
General Maths
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