Answer:

Step-by-step explanation:
Given the following system of equations:

In order to solve the system of equations using the Elimination Method, you can follow these steps:
- Multiply the first equation by -6 and the secondd equation by 4.
- Add both equations.
- Solve for "y".
Then:

- Substitute the value of "y" into one of the original equations and solve for "x":

Answer:
y = 35x
and 350
Step-by-step explanation:
This problem's quite similar to the last question with the only difference being the 2nd row changed
So I <em>think </em>that the answers should be the same
If u divide the area by length then u will get the width as x+4
Answer:
7f
r = ----------- - 4
z
Step-by-step explanation:
I will assume that you meant:
7f
z = ------------
r + 4
Solve for r. Start by interchanging z and (r + 4):
7f
r + 4 = -----------
z
Now subtract 4 from both sides. This isolates r:
7f
r = ----------- - 4
z