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1 3 ems by substitution Solve each system by substitution 1 2x 7y 1 7x y 20 A 3 1 B Infinite number of solutions

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1 3 ems by substitution Solve each system by substitution 1 2x 7y 1 7x y 20 A 3 1 B Infinite number of solutions C 3 1 D 3 1 3 x 7y 10 3x 7y 2 A 2 4 C 4 2 B 4 2 D 4 2 2 4 2 8x 5y 1 y 3 A 2 3 C 6 3 4 3x 24y 3 x 8y 4 A No solution C 5 5 B 2 3 D 6 3 B 5 6 D 5 6

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