Home > A2C > Chapter 10 > Lesson 10.1.2 > Problem 10-48
10-48.
Solve the system of equations below. Homework Help ✎ 8x − 3y − 2z = −8
−2x + 8y + 7z = 26
4x + y − 5z = 23
8x − 3y − 2z = −8 →
4(−2x + 8y + 7z = 26) →
2(−2x + 8y + 7z = 26) →
4x + y − 5z = 23 →
8x − 3y − 2z = −8
−8x + 32y + 28z = 104
29y + 26z = 96 (a)
−4x + 16 + 14z = 52
4x + y − 5z = 23
17y + 9z = 75 (b)
Now use (a) and (b) to find y and z, and then find x.