How do you solve this? I posted this question last night and someone answered but it wasn't the right answer. I have tried so many times and still can't get the right answer. the right answer is suppose to be 15/2
5/6-1/3+ 7/8/(1/2)^3
Thank you for your help!!
When you posted this question last night it was like this:
http://www.jiskha.com/display.cgi?id=1264129011
drwls answered it correctly following the order of operation the way you typed it.
Now you changed the question.
do you mean (7/8) ÷ (1/2)^3 or
7 ÷ (8/(1/2)^3 ??
e.g. 4/5/6
if 4 ÷ (5/6)
then 4(6/5) = 24/5
if (4/5) ÷ 6
then (4/5)(1/6) = 4/30 = 2/15 , not the same
Please clarify.
A "triple decker" fraction like
7/8/(1/2)^3 is ambiguous
I meant this one:
(7/8) ÷ (1/2)^3
ok then
5/6-1/3+ (7/8) ÷ (1/2)^3
= 5/6-1/3+ (7/8) ÷ (1/8)
= 5/6 - 2/6 + 7
= 5/6 - 2/6 + 42/6
= 45/6
= 15/2
To solve the expression:
5/6 - 1/3 + 7/8 / (1/2)^3,
we can follow the order of operations, also known as PEMDAS (Parentheses, Exponents, Multiplication and Division, Addition and Subtraction).
1. Start by evaluating the exponent:
(1/2)^3 = (1/2) * (1/2) * (1/2) = 1/8
2. Next, simplify the division:
7/8 / 1/8 = 7/8 * 8/1 = 7
3. Now, substitute the results back into the original expression:
5/6 - 1/3 + 7 = 5/6 - 1/3 + 7/1
4. Since the denominators are different, we need to find a common denominator. In this case, the least common denominator (LCD) is 6.
5. Convert each fraction so that the denominator is 6:
5/6 - 1/3 + 7/1 = (5/6) * (2/2) - (1/3) * (2/2) + (7/1) * (6/6)
= 10/12 - 2/6 + 42/6
6. Now, add the fractions together:
10/12 - 2/6 + 42/6 = (10 - 2 + 42)/6 = 50/6
7. Finally, simplify the fraction:
50/6 = 25/3
Therefore, the correct answer to the expression 5/6 - 1/3 + 7/8 / (1/2)^3 is 25/3 or 8 1/3.