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Please, I need help with these systems problems.

 

 Jul 10, 2020
 #1
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first one

x-2y = 10

3x-5y = 27        multiply first equation by -3 to get:

-3x + 6y = -30    now add the bottom two equations   (this will 'ELIMINATE'  the 'x' variable)

y = -3                  

 

now use this value of y in one of the eqautions to find x

 

x - 2(-3) = 10

x =4

 

 

Solve the second one similarly.....

 Jul 10, 2020
edited by ElectricPavlov  Jul 10, 2020

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