Solved: Solving systems of equations, Algebra

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Solving systems of equations

Question:

Solving systems of Equations

Please help with the following problems. Provide step by step calculations.

1. Solve for X, Y, and Z in the following systems of three equations:

a. X + 2Y + Z = 6
X + Y = 4
3X + Y + Z = 8

b. 10X + Y + Z = 12
8X + 2Y +Z = 11
20X - 10Y - 2Z = 8

c. 22X + 5Y + 7Z = 12
10X + 3Y + 2Z = 5
9X + 2Y + 12Z = 14

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