Mathematics for IGCSE & O level - Using A Calculator (Section 3 - No. 40)
When writing a fraction in a calculator, how are brackets used?
Always before each fraction
Before the numerator and the denominator, so that the calculator does this calculation first.
To separate the numerator and denominator
They are not used for simple fractions
解释
Brackets are used to ensure that the numerator and denominator are calculated separately before the division.