Quadratic Inequalities (G12)
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FALSE. While substitution method works for all systems, it's not always the most efficient. For equations where coefficients are easily eliminated (like in \(2x + y = 7\) and \(x - y = 2\)), elimination is faster. For equations where one variable is already isolated (like \(y = 2x + 1\) and \(3x - y = 4\)), substitution is more efficient. The choice depends on the specific equations.
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