Dynamite23 Dynamite23
  • 23-01-2021
  • Mathematics
contestada

Solve the system of equations - 8x + 3y = -17 and 3x - y = 7 by combining the
equlations.

Respuesta :

PhantomWisdom PhantomWisdom
  • 28-01-2021

Given :

Two equations :

-8x + 3y = -17  ....1)

3x - y = 7        ....2)

To Find :

The solution of the system.

Solution :

Multiplying equation 2) by 3 and adding with equation 1), we get :

(-8x + 3y) + 3(3x - y) = -17 + 21

x = 4

Putting above value of x equation 2) we get :

12 - y = 7

y = 5

Therefore, solution of system is ( 4,5 ).

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