Final answer:
The value of x in the given system of equations is 1/2.
Step-by-step explanation:
To find the value of x in the given system of equations, we can use the method of elimination. Adding the two equations together, we eliminate the y variable and solve for x.
Adding the equations: (3x + y) + (7x - y) = 3 + 2
10x = 5
x = 1/2
Therefore, the value of x is 1/2.
Learn more about solving linear equations