Question

5÷−1(1 + 4)×2.7 simplify this expression, if answer is -67.5 Explain why

Answer 1

Step-by-step explanation and Answer:

The expression you provided is:

5÷−1(1+4)×2.7

Let’s simplify it step by step:

First, we perform the operation inside the parentheses:

5÷−1(5)×2.7

Next, we perform the multiplication and division from left to right:

−5(5)×2.7=−25×2.7

Finally, we perform the last multiplication:

−25×2.7=−67.5

So, the simplified result of the expression is -67.5. The reason the answer is negative is because of the negative sign in front of the 1, which makes the entire expression negative. The 2.7 at the end of the expression is then multiplied with the result of the previous operations, giving us the final answer.

Answer 2

The simplified expression is not -67.5. After simplifying the given expression 5 + -1 * (1 + 4) * 2.7, the correct answer is -6.9.

Explanation:

Let's simplify the expression given step by step:

The expression: 5 + -1 * (1 + 4) * 2.7 First, we will perform the operation inside the parentheses: 1 + 4 = 5 So, the expression now is: 5 + -1 * 5 * 2.7

Next, we need to perform the multiplication before the addition, according to the order of operations (PEMDAS/BODMAS): -1 * 5 = -5 -5 * 2.7 = -13.5 So, the expression now is: 5 + (-13.5)

Finally, we perform the addition: 5 + (-13.5) = 5 - 13.5 = -8.5 So, the simplified expression is -8.5, not -67.5 or -6.9.

The correct answer is -8.5, as the given answer of -6.9 is incorrect as well.