This topic covers basic algebraic skills focused on solving linear equations by finding the correct value to replace a placeholder (represented as a circle). Each question presents a simple linear equation with three terms involving basic operations like addition, subtraction, and multiplication. Users are required to determine the correct value that balances the equation by selecting from multiple options provided. These problems are an introduction to understanding and manipulating algebraic expressions, targeted at beginners to build foundational algebra skills.
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What number can be put in the circle to make this equation correct?