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Simplify: 5.5 + 2.4 ├Ч 0.5 - 1.2
5.5
5.7
6.7
4.5
5
Perform multiplication before addition and subtraction to avoid order-of-operation errors.
Expression: 5.5 + 2.4 ├Ч 0.5 - 1.2
BODMAS:┬аBrackets,┬аOf,┬аDivision,┬аMultiplication,┬аAddition,┬аSubtraction
Perform multiplication before addition and subtraction to avoid order-of-operation errors.
Performing addition before multiplication (e.g., adding 5.5 and 2.4 first), which violates the standard order of operations.
Identify Order of Operations
According to the BODMAS rule, multiplication must be performed before addition and subtraction in the expression 5.5+2.4├Ч0.5тИТ1.2.
2.4├Ч0.5=1.2
Substitute and Perform Addition
Substitute the product back into the expression: 5.5+1.2тИТ1.2. Next, perform addition from left to right.
5.5+1.2=6.7
Perform Subtraction
Subtract 1.2 from 6.7 to get the final simplified result.
6.7тИТ1.2=5.5
A is correct because simplifying the expression using the BODMAS rule yields 5.5.
Mastering the order of operations is foundational for simplifying complex algebraic expressions and numerical approximations in quantitative aptitude sections.
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