1: 5/8 - (-2/8)
2: -9/10 -2/5
3: 6 3/5 - (-2 1/5)
Before you can solve these you need to find the common denominator for the two numbers.
I 'm sorry, but these are the these already have common denominator.
So add just like a whole numbers.
5/8 - (-2/8) = 5/8 + 2/8 = 7/8
Do the others the same way.
oh ok thx
Im strugling may you please help Ms.Sue me find the common denominator for the two numbers?
Common denominator
1: 5/8 - (-2/8)
2: -9/10 -2/5 10
3: 6 3/5 - (-2 1/5)
??????????
im not understanding how to find the common denominator
To solve these arithmetic operations involving fractions, you need to follow a few steps. Let's solve each problem step by step:
1. 5/8 - (-2/8):
To subtract fractions, you need to have a common denominator. In this case, the denominators are already the same, which is 8. Therefore, you can directly subtract the numerators:
5/8 - (-2/8) = (5 + 2) / 8 = 7/8
2. -9/10 - 2/5:
In this case, the denominators are different, so you need to find the least common denominator (LCD) and convert the fractions to have the same denominator before subtracting:
The LCD of 10 and 5 is 10. To convert the fractions, multiply the numerator and denominator of the first fraction by 1, and multiply the numerator and denominator of the second fraction by 2 to get a common denominator of 10:
-9/10 - 2/5
= (-9/10) * (1/1) - (2/5) * (2/2)
= (-9/10) * (1/1) - (4/10) * (2/2)
= (-9/10) - (8/10)
= -17/10
3. 6 3/5 - (-2 1/5):
To subtract mixed numbers, you should first convert them into improper fractions and then follow the same process as adding or subtracting fractions with common denominators:
6 3/5 is equivalent to (6 * 5 + 3)/5 = 33/5
-2 1/5 is equivalent to (-2 * 5 + 1)/5 = (-9/5)
Now, we can subtract these improper fractions:
33/5 - (-9/5)
= 33/5 + 9/5
= (33 + 9)/5
= 42/5
Therefore, the solutions are:
1. 7/8
2. -17/10
3. 42/5