Math Problem Statement
2x-y=7 -6x+3y=21 solve with substitution
Solution
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Math Problem Analysis
Mathematical Concepts
Algebra
Systems of Equations
Substitution Method
Formulas
Substitution: Solve one equation for one variable and substitute into the other
Linear Equation: ax + by = c
Theorems
Inconsistent System: A system that has no solution, often revealed by contradictions
Suitable Grade Level
Grades 9-10
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