Question

#17 please help me solve this

Answer 1

Answer:

x =  -6; y = 3

Step-by-step explanation:

1. Make Ax + By = C into two equations.

3x + 5y = -3

(1) 5y = -3x - 3

    y = -3/5x - 3/5

(2) 3x = -5y - 3

     x = -5/3y - 1

2. Insert (1) and (2) into -3x + 2y = 24.

(1) -3x + 2(-3/5x - 3/5) = 24

   -3x - 6/5x - 6/5 = 24

   -21/5x = 126/5

   x = 126/5 * -5/21

   x = -6

(2) -3(-5/3y - 1) + 2y = 24

    5y + 3 + 2y = 24

    7y = 21

    y = 3