Math 20 3 variable systems
I've tried this question so many times and I can't seem to get the right answer. Any takers??
Solve this system using substitution or elimination:
Here is what I did:
4e + 9 = -26
4e = -35
d+e-2f = -5
d+ (-35/4) -2(-9/2) = -5
d-35/4 + 9 = -5
I have no idea where I went wrong. The answer is(33/4,-17/4,9/2)
So i got one variable right, but messed up on the others... ugh
Be careful with signs!!!!!
You obviously understand the process.
The line -12f = -54 implies f = +9/2.
Substitute +9/2 as you did with -9/2, and the remaining variables can be found.