Given the following System of equations:

You can use the Substitution method to solve it, as following:
1. Solve for "x" from the first equation:

2. Now you must substitute this equation into the second original equation:

3. Solve for "y":

4. Knowing the value of "y"; you can substitute it into this equation:

Then:

5. Evaluating, you get that the value of "x" is:

Then, the answer is:
