Key term for Edexcel GCSE Mathematics, used in Solving Equations and Inequalities.
A valid answer within an examiner-approved range, typically derived from reading a hand-drawn graph.
Approximate solution appears in Edexcel GCSE Mathematics revision content for Algebra, especially Solving Equations and Inequalities and Simultaneous Equations.
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Algebra
Solving Equations and Inequalities • Linear Equations
