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For equation 2x 2y=1 and 2x-y=1 over z3 what is the solution?
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For equation 2x 2y=1 and 2x-y=1 over z3 what is the solution?
Solving Equations over Z3:

To solve the equations 2x 2y=1 and 2x-y=1 over z3, we need to follow the steps given below:

Step 1: Write the Equations

2x + 2y = 1

2x - y = 1

Step 2: Write the Equations in Matrix Form

[2 2 | 1]

[2 -1 | 1]

Step 3: Find the Determinant of the Matrix

det([2 2

2 -1]) = (2*(-1)) - (2*2) = -6 ≡ 0 (mod 3)

Since the determinant is 0 (mod 3), the matrix is singular and the equations have no unique solution.

Step 4: Solve the Equations Using Row Operations

[2 2 | 1]

[2 -1 | 1]

R2 → R2 - R1

[2 2 | 1]

[0 -3 | 0]

R2 → -R2/3

[2 2 | 1]

[0 1 | 0]

R1 → R1 - 2R2

[2 0 | 1]

[0 1 | 0]

Step 5: Write the Solution

The solution to the equations 2x + 2y = 1 and 2x - y = 1 over z3 is:

x ≡ 2 (mod 3)

y ≡ 0 (mod 3)
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For equation 2x 2y=1 and 2x-y=1 over z3 what is the solution?
( 1,1) and (2,0)
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For equation 2x 2y=1 and 2x-y=1 over z3 what is the solution?
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