This math topic focuses on solving linear systems by simple equation substitution. The problems involve substituting one equation into another to solve for variables in algebraic equations. Students are tasked with solving systems, providing practice in manipulating equations to isolate variables and substituting correctly to find solutions. Multiple-choice answers are provided for each problem, requiring students to select the correct value of the variable from several options. This is a fundamental exercise for building skills in algebra and understanding systems of linear equations.
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Solve for the variable by substituting the second equation into the first