diketahui sistem persamaan liner : 2x + 3y = 5 3x + 4y= 6 nilai dari x + 2y =

2x + 3y = 5 |×3
3x + 4y = 6 |×2

6x + 9y = 15
6x + 8y = 12
----------------- --
          y = 5

2x + 3y = 5
2x = 5 - 3y
2x = 5 - 3(3)
  x = -4/2
  x = -2

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

semoga membantu ^^