Question

2x+y=5
x+3y=5

a.(5,0)
b.(2,1)

Answer 1

2x + 1y = 5 ⇒ 6x + 3y = 15
1x + 3y = 5 ⇒ 1x + 3y = 5
5x = 10
5 5
x = 2
2x + y = 5
2(2) + y = 5
4 + y = 5
- 4 - 4
y = 1
(x, y) = (2, 1)

The answer is B.