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Solving rational equations
Learn how to solve equations that have a rational expression, or a few of those.
Sal solves the equation (14x+4)/(-3x-2)=8.
Solve equations that have one rational expression whose numerator and denominator are linear expressions.
Sal solves the following equation by first simplifying the rational expression: x^2-(x^2-4)/(x-2)=4.
Solve equations that have one rational expression whose numerator and denominator are polynomial expressions.
Sal solves (x²-10x+21)/(3x-12)=(x-5)/(x-4), which has one real solution and one extraneous solution.
Sal solves (-2x+4)/(x-1)=3/(x+1)-1.
Solve advanced rational equations with multiple expressions.
Sal solves the equation 4/(p-1)=5/(p+3).
Sal solves the equation 5/(2x)-4/(3x)=7/18 by first finding the LCM (least common multiple) of 2x and 3x.
Sal solves the following equation and eliminates the resulting extraneous solution: (x^2)/(x+2)=4/(x+2).