This math topic focuses on solving simple linear equations, specifically formulated with one variable represented as a circle. Students are required to determine what number replaces the circle to balance the equation correctly. The equations involve basic arithmetic operations such as addition and subtraction. Multiple choices are provided for each problem, testing the student’s ability to isolate the variable and understand basic algebraic concepts. This topic is a foundational exercise typically suitable for beginners learning algebra.
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What number can be put in the circle to make this equation correct?