Question

I need help ASAP you have to show your work

Answer 1

Answer: A. (4,1)

Explanation:

`\displaystyle\\\left \{ {{x+y=5\ \ \ \ (1)} \atop {2x-y=7\ \ \ (2)}} \right. \\`

Sum up equations (1) and (2):

`3x=12`

Divide both parts of the equation by 3:

`x=4`

Substitute the value of x into equation (1):

`4+y=5\\4+y-4=5-4\\y=1\\Thus,\ (4,1)`