Adding and subtracting algebraic fractions is a similar process ... if it is difficult to work out the lowest common multiple of two expressions, a common denominator can always be found by ...

Parsing algebraic expressions is always a pain. If you need to compute, say, 2+4*2, the answer should be the same as (2 + (4 *2)), not ((2 + 4) * 2) — in other words, the right answer is 10 ...

Adding and subtracting algebraic fractions is a similar process ... if it is difficult to work out the lowest common multiple of two expressions, a common denominator can always be found by ...