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Linear Equations EXPLAIN IN DETAILS PLEASE. 3 solutions in each problem using graphical, substitution and elimination method SOLVE EACH SYSTEM USING GRAPHICAL METHOD, SUBSTITUTION METHOD

Linear Equations
EXPLAIN IN DETAILS PLEASE.

3 solutions in each problem using graphical, substitution and elimination method
SOLVE EACH SYSTEM USING GRAPHICAL METHOD, SUBSTITUTION METHOD AND ELIMINATION METHOD. 1. x - y = 3 and 7x - y + 3 = 0 2. 2y - 7x = 18 and 6x + 6y = 0 3. 3x - y = 9 and 6x = 10 + 2y 4. x + 4y = 4 and 12y - 12 = -3

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