Final answer:
In the expression, 36 - 6.3 = 18 * 3, the operation 18 * 3 should be performed first, following the PEMDAS/BIDMAS rule governing the order of operations in mathematics.
Step-by-step explanation:
The field of mathematics, specifically the PEMDAS or BIDMAS rule (Parentheses/BODMAS, Exponents/Indices, Multiplication and Division (from left to right), Addition and Subtraction (from left to right)), helps dictate the order of operations in a given expression.
The expression in this case is 36 - 6.3 = 18 * 3. According to the BIDMAS principle, you should first carry out any operation of multiplication or division before subtraction or addition. As such, we will perform the operation 18 * 3 first.
Please note though, this mathematical sentence seems slightly confusing as it mixes subtraction, equal sign, and multiplication together without the appropriate application of mathematical conventions such as brackets or parentheses, which can lead to misinterpretation of the operation to be performed.
Learn more about Order of Operations