Shared Flashcard Set

Details

Title

Combining Fractions

Description

Reminder of the rules for combining fractions

Total Cards

Subject

Mathematics

Level

Undergraduate 1

Created

08/09/2020

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Additional Mathematics Flashcards

Term

Fraction addition:

^a⁄_b + ^c⁄_d

Definition

Cross-multiply and add to get the numerator:

⁽^ad^{+ bc}⁾⁄_bd

Term

Fraction subtraction:

^a⁄_b - ^c⁄_d

Definition

Cross-multiply and add to get the numerator:

⁽^ad^{- bc}⁾⁄_bd

Term

Fraction multiplication:

^a⁄_b · ^c⁄_d

Definition

Multiply numerator and denominator:

^a^c⁄_bd

Term

Fraction division:

^a⁄_b / ^c⁄_d

Definition

Invert the divisor and apply the multiplication rule:

^a⁄_b·^d⁄_c = ^ad⁄_bc