Question

5x + 2y = 1 -3x + 3y = 5 substitution method

Answer 1

Respuesta:

5x + 2y = 1 -3x + 3y ...(1)

1 -3x + 3y = 5...(2)

Of (2)...

1 -3x + 3y = 5

 -3x + 3y = 5 - 1

 -3x + 3y = 4...(3)

(3) in (1)

5x + 2y = 1 + 4

5x + 2y = 5

       2y = 5 -5x

         y = (5 - 5x) :2

         y = 2,5 - 2,5x