Question

19. Solve the paei of equations 3x + 3y = 6,2x - 3) = 12 by substittion method​

Answer 1

Answer:

3x + 3y = 6 ; 2x - 3y = 12

3x = 6 - 3y

x = (6 - 3y)/3

Putting value of x in eq.2

2/3(6-3y) - 3y = 12

4 - 2y -3y = 12

-8 = 5y

y = -8/5

2x - 3(-8/5) = 12

2x = 36/5

x = 18/5

So , x = 18/5 and y = -8/5