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2x + 3y = 6 27. 2x - 3y = -1 10x + 10y = 5 [3x – 28. -x + y = -2 2 2y = 0 1 x - y = 29. 30. 5x + 10y = 4 x - 2y = 8 2x – y = -1 S 3x – 5y = 3 x + y - z = 6 Зх — 2у + z %3D -5 31. 32. 33. (15x + 5y = 21 x + -y = x + 3y – 2z = 14 y + z = -4 x + 2y - z = -3 x + 4y – 3z = -8 X - 2х — Зу + 42 %3D —15 5х + у — 22 %3D 12 34. 35. 2x 4y + 36. 3x y + 3z = 12 = - z = -7 -2x + 2y – 3z = x + y + 6z = 1 %3D х — 2у + 32 %3 1 Зх + у - 22 %3D 0 2х — 4у + 6z %3D 2 x - y + 2z = x + 2y - z = 0 37. 38. 3x + 2y = 4 39. 2x – 4y + z = 0 -2x + 2y – 4z = -10 -2x + 2y – 3z = 0 х — 2у + 3г %3 0 Зх + у - 2г %3D 0 2x – 4y + 6z = 0 x - y + 2z = 0 3x + 2y = 0 х+ 4у — 3г %3 0 40. 3x - y + 3z = 0 41. 42. x + y + 6z = 0 -2x + 2y – 4z = 0 6-12

2x + 3y = 6 27. 2x - 3y = -1 10x + 10y = 5 [3x – 28. -x + y = -2 2 2y = 0 1 x - y = 29. 30. 5x + 10y = 4 x - 2y = 8 2x – y = -1 S 3x – 5y = 3 x + y - z = 6 Зх — 2у + z %3D -5 31. 32. 33. (15x + 5y = 21 x + -y = x + 3y – 2z = 14 y + z = -4 x + 2y - z = -3 x + 4y – 3z = -8 X - 2х — Зу + 42 %3D —15 5х + у — 22 %3D 12 34. 35. 2x 4y + 36. 3x y + 3z = 12 = - z = -7 -2x + 2y – 3z = x + y + 6z = 1 %3D х — 2у + 32 %3 1 Зх + у - 22 %3D 0 2х — 4у + 6z %3D 2 x - y + 2z = x + 2y - z = 0 37. 38. 3x + 2y = 4 39. 2x – 4y + z = 0 -2x + 2y – 4z = -10 -2x + 2y – 3z = 0 х — 2у + 3г %3 0 Зх + у - 2г %3D 0 2x – 4y + 6z = 0 x - y + 2z = 0 3x + 2y = 0 х+ 4у — 3г %3 0 40. 3x - y + 3z = 0 41. 42. x + y + 6z = 0 -2x + 2y – 4z = 0 6-12

Algebra for College Students
Algebra for College Students
10th Edition
ISBN:9781285195780
Author:Jerome E. Kaufmann, Karen L. Schwitters
Publisher:Jerome E. Kaufmann, Karen L. Schwitters
Chapter1: Basic Concepts And Properties
Section1.CR: Review Problem Set
Problem 67CR
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solve each system of equations using Cramer’s Rule if it is applicable. If Cramer’s Rule is not applicable, say so

2x + 3y = 6 27. 2x - 3y = -1 10x + 10y = 5 [3x – 28. -x + y = -2 2 2y = 0 1 x - y = 29. 30. 5x + 10y = 4 x - 2y = 8 2x – y = -1 S 3x – 5y = 3 x + y - z = 6 Зх — 2у + z %3D -5 31. 32. 33. (15x + 5y = 21 x + -y = x + 3y – 2z = 14 y + z = -4 x + 2y - z = -3 x + 4y – 3z = -8 X - 2х — Зу + 42 %3D —15 5х + у — 22 %3D 12 34. 35. 2x 4y + 36. 3x y + 3z = 12 = - z = -7 -2x + 2y – 3z = x + y + 6z = 1 %3D х — 2у + 32 %3 1 Зх + у - 22 %3D 0 2х — 4у + 6z %3D 2 x - y + 2z = x + 2y - z = 0 37. 38. 3x + 2y = 4 39. 2x – 4y + z = 0 -2x + 2y – 4z = -10 -2x + 2y – 3z = 0 х — 2у + 3г %3 0 Зх + у - 2г %3D 0 2x – 4y + 6z = 0 x - y + 2z = 0 3x + 2y = 0 х+ 4у — 3г %3 0 40. 3x - y + 3z = 0 41. 42. x + y + 6z = 0 -2x + 2y – 4z = 0 6-12
Transcribed Image Text:2x + 3y = 6 27. 2x - 3y = -1 10x + 10y = 5 [3x – 28. -x + y = -2 2 2y = 0 1 x - y = 29. 30. 5x + 10y = 4 x - 2y = 8 2x – y = -1 S 3x – 5y = 3 x + y - z = 6 Зх — 2у + z %3D -5 31. 32. 33. (15x + 5y = 21 x + -y = x + 3y – 2z = 14 y + z = -4 x + 2y - z = -3 x + 4y – 3z = -8 X - 2х — Зу + 42 %3D —15 5х + у — 22 %3D 12 34. 35. 2x 4y + 36. 3x y + 3z = 12 = - z = -7 -2x + 2y – 3z = x + y + 6z = 1 %3D х — 2у + 32 %3 1 Зх + у - 22 %3D 0 2х — 4у + 6z %3D 2 x - y + 2z = x + 2y - z = 0 37. 38. 3x + 2y = 4 39. 2x – 4y + z = 0 -2x + 2y – 4z = -10 -2x + 2y – 3z = 0 х — 2у + 3г %3 0 Зх + у - 2г %3D 0 2x – 4y + 6z = 0 x - y + 2z = 0 3x + 2y = 0 х+ 4у — 3г %3 0 40. 3x - y + 3z = 0 41. 42. x + y + 6z = 0 -2x + 2y – 4z = 0 6-12
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