Adding and subtracting rational expressions involves combining fractions with variables. In these expressions, polynomials serve as numerators and denominators. The process requires finding a common denominator, equivalent to the least common multiple of the individual denominators. Once the common denominator is established, the numerators are added or subtracted accordingly. The result is then simplified, factoring both the numerator and denominator. This algebraic skill is crucial for solving complex equations, particularly in algebra and calculus. Mastering the addition and subtraction of rational expressions enables a deeper understanding of algebraic manipulation and prepares students for more advanced mathematical concepts.
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