The system of equations has no solution
Step-by-step explanation:
The method of substitution consists in solving one equation for a variable and replacing it in the other equation.
In this case one of the equations is already solved for one of the variables ():
So the next step is to plug this in the other equation wich is:
So we will have
solving the parenthesis:
wich is not a valid answer, so the system of equations has no solution.