Question

Solve x + y = 4,2x - 3y = 3 by substitution method.
OR
Emlain why 11 x x x 5 x 3 x 1 + x 2 X 3 are​

Answer 1

Answer:

x=3, y=1

Step-by-step explanation:

x+y=4

2x-3y=3

y=4-x

2x-3(4-x)=3

2x-12+3x=3

5x=15

x=3

y=4-x

4-3=1

y=1

Answer 2

Answer:

y = -x + 4

// Plug this in for variable  y  in equation [2]

  [2]    2x - 3•(-x +4) = 3

  [2]    5x = 15

// Solve equation [2] for the variable  x  

  [2]    5x = 15  

  [2]    x = 3  

// By now we know this much :

   x = 3

   y = -x+4

// Use the  x  value to solve for  y  

   y = -(3)+4 = 1  

Solution :

{x,y} = {3,1}

Step-by-step explanation: