can you please explain &show me how to get these answers to common denominators,find the sum & difference,write in simplest form,7/10-3/5 =,2/3-1/6 =,5/6-7/12 =,5/12+1/4=,1/6+2/9=,5/8+1/2=,3/8+1/4= i'm really having a huge problem understanding this,it's getting late,i'm having a test tomorrow &really need to know how to do these.Thank you so much for allyour help.
You didn't bother to read and follow directions in my previous post?
http://www.jiskha.com/display.cgi?id=1298606169
how will you get 5divided by4,820
Sure! I'd be happy to explain how to get the answers to these problems step by step.
1. 7/10 - 3/5:
To find a common denominator, we need to find the least common multiple (LCM) of the denominators, which in this case is 10 and 5. The LCM of 10 and 5 is 10.
Now, we convert the fractions to have a denominator of 10:
7/10 - 3/5 = (7/10) * (2/2) - (3/5) * (2/2) = 14/20 - 6/20 = 8/20
Now, we simplify the fraction to its simplest form:
8/20 = 2/5
2. 2/3 - 1/6:
The common denominator for 2/3 and 1/6 is 6. We convert the fractions accordingly:
2/3 - 1/6 = (2/3) * (2/2) - (1/6) * (1/1) = 4/6 - 1/6 = 3/6
Now, we simplify the fraction:
3/6 = 1/2
3. 5/6 - 7/12:
The common denominator for 5/6 and 7/12 is 12. We convert the fractions accordingly:
5/6 - 7/12 = (5/6) * (2/2) - (7/12) * (1/1) = 10/12 - 7/12 = 3/12
Now, we simplify the fraction:
3/12 = 1/4
4. 5/12 + 1/4:
The common denominator for 5/12 and 1/4 is 12. We convert the fractions accordingly:
5/12 + 1/4 = (5/12) * (1/1) + (1/4) * (3/3) = 5/12 + 3/12 = 8/12
Now, we simplify the fraction:
8/12 = 2/3
5. 1/6 + 2/9:
The common denominator for 1/6 and 2/9 is 18. We convert the fractions accordingly:
1/6 + 2/9 = (1/6) * (3/3) + (2/9) * (2/2) = 3/18 + 4/18 = 7/18
6. 5/8 + 1/2:
The common denominator for 5/8 and 1/2 is 8. We convert the fractions accordingly:
5/8 + 1/2 = (5/8) * (1/1) + (1/2) * (4/4) = 5/8 + 4/8 = 9/8
Since the sum 9/8 is an improper fraction, we can also write it as a mixed number: 1 and 1/8.
7. 3/8 + 1/4:
The common denominator for 3/8 and 1/4 is 8. We convert the fractions accordingly:
3/8 + 1/4 = (3/8) * (2/2) + (1/4) * (2/2) = 6/8 + 2/8 = 8/8
The fraction 8/8 is equal to 1 whole, so the sum is 1.
I hope this explanation helps you understand how to solve these problems. Good luck on your test!