Question

x+3y=13 and 3x+4y=19 substitution method​

Answer 1

Answer:

x+3 y=13______1

3 x+4 y=19_________2

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Answer 2

Answer:

hey mate here is ur answer

hope it was help full

given question: 1) x + 3y = 13

                          2) 3x + 4y = 19

Solve equation [1] for the variable  x  

 

 [1]    x = -3y + 13

=  Plug this in for variable  x  in equation [2]

  [2]    3•(-3y+13) + 4y = 19

  [2]     - 5y = -20

= Solve equation [2] for the variable  y  

  [2]    5y = 20  

  [2]    y = 4  

=  By now we know this much :

   x = -3y+13

   y = 4

= Use the  y  value to solve for  x  

   x = -3(4)+13 = 1  

Solution :

{x, y} = {1,4}

(remember solve by substitution)

thank you