Engineering↗
Arithmetic of Fractions: a Working Reference
Building up, reducing, adding, subtracting, multiplying and dividing fractions, why cross-multiplication is the wrong habit, and how compound fractions are cleared.
Every page in the KEVOS library tagged common denominator. 2 pages.
Building up, reducing, adding, subtracting, multiplying and dividing fractions, why cross-multiplication is the wrong habit, and how compound fractions are cleared.
Algebraic fractions, the values that must be excluded, reducing by cancelling factors rather than terms, and clearing compound fractions by a single multiplication.