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Rational Algebraic Expressions Calculator

Addition and subtraction of rational algebraic expressions using LCD method.

LCD

METHOD

+/−

OPERATIONS

Steps

SHOWN

Rational Algebraic Expressions Calculator

Addition and subtraction of rational algebraic expressions using LCD method.

Operation

Numerator 1

Denominator 1

Numerator 2

Denominator 2

Result

Result—

LCD—

Steps

How it works

Enter numerator and denominator as polynomials, e.g. x+2.

Cross-multiply denominators to form the LCD.

Expand numerators, combine and simplify.

Example

(x+1)/(x-2) + (x-3)/(x+4)

LCD = (x-2)(x+4)

= [(x+1)(x+4)+(x-3)(x-2)] / [(x-2)(x+4)]

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