Math & Algebra

Fraction arithmetic, proportion solvers, matrix tools, percentage calculators, and other algebra utilities with step-by-step explanations.

Arithmetic and Ratios

Exact fraction math, percentages, and proportion solving.

Exact fraction arithmetic with steps

Percentages, changes, time/mass ratios, and OBP

Solve a/b = c/d with cross-multiplication

Matrix reduction with exact rational arithmetic.

Reduced row echelon form with exact arithmetic