2 x + y = 7 dan 5 X kurang 3 Y = 1​

Diketahui :
2x + y = 7
5x – 3y = 1

Ditanya :
x dan y?

Jawab :
2x + y = 7 | ×3 |
5x – 3y = 1 | ×1 |

6x + 3y = 21
5x – 3y = 1
__________ +
11x = 22
x = 2

2x + y = 7
2(2) + y = 7
4 + y = 7
y = 3