Question

Penyelesaian sistem persamaan linear 2x + 3y = 12 ;
x - 2y = -1

Answer 1

2x + 3y = 12 [ X 1 ]
x - 2y = -1    [ X 2 ]

2x + 3y = 12
2x - 4y = -2_
      7y = 14
         y = 14
               7
         y = 2

x - 2y = -1
x - 2(2) = -1
x - 4 = -1
x = -1 + 4 = 3