Question

x + y = 3 & 2x + 5y = 12, then

Answer 1

Answer:

y=2,x=1

Step-by-step explanation:

$x + y = 3 \\ 2x + 5y = 12 \\ x = 3 - y \\ \\ 2x + 5y = 12 \\ 2(3 - y) + 5y = 12 \\ 6 - 2y + 5y = 12 \\ 6 + 3y = 12 \\ 3y = 6 \\ y = 2 \\ x + y = 3 \\ x + 2 = 3 \\ x = 1$