⁦Subtracting mixed numbers and calculating with fractions⁩

⁦To subtract⁩ كسر مركب⁦s you can subtract the whole numbers first and then the fractions⁩. ⁦If the fraction of the first number is smaller than the second, open up a whole and turn it into a fraction⁩: ⁦٣١٥ = ٢٦٥⁩. ⁦Then subtract⁩.

⁦Another way is to turn both into improper fractions⁩: ⁦٥١٤ = ٢١٤⁩. ⁦Then subtract the numerators, keep the denominator, and turn the answer back into a mixed number⁩.

⁦A common mistake is to subtract⁩ "⁦small from big⁩" ⁦in the fractions⁩: ⁦in ٢١٥ − ٣٥, you must not do ٣٥ − ١٥⁩. ⁦Open up a whole first⁩.

⁦In an expression with several operations, work out the top of the fraction first, then divide⁩. ⁦Dividing by a fraction means multiplying by its reciprocal⁩. ⁦A fraction whose numerator or denominator is a fraction is a⁩ كسر بسطه ومقامه كسران.

⁦To scale up a recipe, first work out the amount for one person or one glass, then multiply by the number⁩.