Linear systems of equations with 4 unknowns
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tinydancer27br
Answered question
2022-05-26
Linear systems of equations with 4 unknowns
Answer & Explanation
With we can eliminate z so we get:
Then distributing the 3:
Moving variable terms to left of the left side and constant term to right of left side then combining like terms we get:
Subtracting from both sides so we get
Dividing by , then it becomes:
Then deriving from the first equation we get
Substituting w we get:
By the process the steps for the first one are below:
Let's get rid of the negatives:
And the steps for the second one are below:
Get rid of the negatives, there are the 2 equations:
We could do elimination here:
We get then:
Subtracting one from the other we get:
We can distribute the minus sign on the left side:
Simplifying we get:
Dividing both sides by we get:
Now let's plug this in into any one of the equations before multiplying (in this case, I used just for simplicity, simplifying, through the steps:
We've got and . Can you finish the rest to get and ?
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