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OpenStudy (anonymous):
If you were to use the substitution method to solve the following system, choose the new system of equations that would result if x was isolated in the second equation. 2x – 3y – z = –1 x – 4y + 3z = –11 2x + 9y + 3z = –13 Answer –11y + 5z = 21 y + 9z = 9 5y – 7z = 21 17y – 3z = 9 –5x +5y = –8 –4x + 18z = –10 7x – 13y = –14 8x = –16
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