414,501 views
42 votes
42 votes
PLEASE HELP!!!! Identify the mistake and use the correct answer to the problem!!!

PLEASE HELP!!!! Identify the mistake and use the correct answer to the problem!!!-example-1
User Moss Palmer
by
2.8k points

2 Answers

18 votes
18 votes

Answer:

11/8 is the correct answer

Explanation:

15/24 + 3/4

Reduce the fraction 15/24 ​ to lowest terms by extracting and canceling out 3.

=5/8 +3/4

Least common multiple of 8 and 4 is 8. Convert 5/8 and 3/4 to fractions with denominator 8.

= 5/8 + 6/8

since 5/8 and 6/8 have the same denominator, add them by adding their numerators.

= 5 + 6/8

Add 5 and 6 to get 11.

=11/8

here is why 9/14 is wrong

PLEASE HELP!!!! Identify the mistake and use the correct answer to the problem!!!-example-1
PLEASE HELP!!!! Identify the mistake and use the correct answer to the problem!!!-example-2
User Shpigford
by
2.6k points
21 votes
21 votes

Answer:

1
(3)/(8)

Explanation:

the denominators must be the same so, since 4 goes evenly into 24 we can create an equivalent fraction from 3/4 to 18/24 (multiply numerator and denominator by 6)

now you can add:


(15)/(24) +
(18)/(24) =
((15+18))/(24) =
(33)/(24)

since the numerator is larger than the denominator this is called an improper fraction and can be changed into a mixed number by dividing 24 into 33

24 goes into 33 one time with a remainder of 9

so 33/24 = 1
(9)/(24) wherein 9 and 24 can each have a 3 factored out to make it fully simplified

9÷3 = 3

24÷3 = 8

final answer is 1
(3)/(8)

User Simon Briggs
by
3.4k points
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