2y - x = 0

Question

x = y + 7

If (x,y) satisfies the given system of equations, what is the value of x?

Answer 1

Substitute the second equation into the first equation:

2y - (y + 7) = 0
2y - y - 7 = 0
y - 7 = 0
y = 7

Now, use the second equation to find the value of x:

x = 7 + 7
x = 14

Therefore, the value of x is 14.