Exact rational linear algebra
Matrix Addition Calculator
Add two matrices entry by entry with exact fraction arithmetic and helpful dimension validation.
Matrix A
3 x 3
Matrix B
3 x 3
Basic
Square Matrix
Row Reduction
How it works
- The calculator adds matching entries from Matrix A and Matrix B.
- Both matrices must have the same dimensions for addition to be defined.
- Results stay exact even if you enter decimals.
Common mistakes
- Trying to add matrices with different shapes.
- Confusing addition with multiplication.
- Leaving invalid text in a cell.
FAQ
Does subtraction work too?
Yes. The same calculator also supports A - B.
Can I use fractions in both matrices?
Yes. Fractions, integers, and finite decimals are supported.