Biggie S.
asked • 09/23/21solve the system of equations with three variables
x - 3y + 3z = -4
2x + 3y - z = 15
4x - 3y - z = 19
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1 Expert Answer
Mark is, as usual, correct..
Start by adding the first 2 equations and then subtract the first equation from the 2nd.x
This eliminates y.
The eliminate x by subtraction.
Inactive Tutor
Well not always, yet thank you for the assurance.
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09/23/21
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Inactive Tutor
What is your question? What prevents you from using elimination with multiplication?09/23/21