What is the solution of the system? Use elimination.

4x = y=23
7x + y =21

1 answer

The correct equations are:
4x + y = 23
7x + y = 21

Now, we can solve the system using elimination method. We can subtract the first equation from the second equation to eliminate y:

7x + y - (4x + y) = 21 - 23
7x + y - 4x - y = -2
3x = -2
x = -2/3

Now, substitute the value of x back into the first equation to solve for y:

4(-2/3) + y = 23
-8/3 + y = 23
y = 23 + 8/3
y = 69/3 + 8/3
y = 77/3

Therefore, the solution to the system of equations is x = -2/3, y = 77/3.