Question

If (x,y) is the solution to the system of equations above, what is the value of x?

Answer 1

x = 16

Explanation:

Multiply the entire first equation by -5 and the entire second equation by 2.

You then get:

15x + 20y = 200

2x - 20y = 72

Add the two equations and you get:

17x = 272

Divide 17 from both sides and you get the answer you need:

x = 16