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Solve the following system of equations:

3x-5y=-11

7x+2y=12.

Express your answer as an ordered pair (x,y).

 Jul 11, 2022
 #1
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3x - 5y  =  -11

7x + 2y =  12

 

Multiply the frist equation  through by  2  and the second one through by 5

 

6x - 10y  =  -22

35x +10y = 60          add these

 

41x  = 38

x = 38 /41

 

Sub this  back into  any equation  to  find y

 

3 (38/41) - 5y =  -11

 

114/41 - 5y  = - 451/ 41

 

-5y =  -451/ 41  - 114/41

 

-5 y = - 565 / 41

 

y =  - 565 / [-5 * 41 ] 

 

y = 113/41

 

 

cool cool cool

 Jul 11, 2022

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