The system of equations 4x-7y=-4 and x-y=-4 is solved by using elimination method, which yields the solution x=-8 and y=-4.
To solve the system of equations 4x-7y=-4 and x-y=-4 by combining the equations, you can use the method of substitution or elimination. Let's use the elimination method for this example.
Firstly, rearrange the second equation to isolate 'y': x-y=-4 becomes y=x+4.
Now, substitute 'y' in the first equation: 4x-7(x+4)=-4.
Simplify and solve for 'x': 4x-7x-28=-4 turns into -3x-28=-4, which becomes -3x=24. Thus, x=-8.
Substitute 'x' back into the second equation to find 'y': y=-8+4, so y=-4.
This gives the solution to the system of equations as x=-8 and y=-4.
The probable question may be:
Solve system of equations
4x-7y=-4 and x-y=-4 by combining the equations