Adding and subtracting mixed numbers with unlike denominators
2 answers:
Answer:
Step-by-step explanation: You need to find a the lowest number that the denominators can be timed by. In you're case. You can just times 5 by 2 = 10
So that both the denominators are 10. And the denominator that was once 5. The numerator of that fraction also needs to be timed by 2.
So then you have 7 18/10 - 6 15/10
Then you can convert them to to proper fractions 8 8/10 - 7 5/10
Then you can take away the fractions so it's
8 8/10 - 7 5/10 = 1 3/10
Convert both numbers into improper fractions by multiplying the whole number by the denominator and adding the numerator
44/5 - 75/10
then you make them have the same denominator (in this case it would be 10) - (44x2)/(5x2)
88/10 - 75/10
then you take away each number as you would normally (88-75)
13/10
and finally, convert
1 3/10
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Answer:
First one is c because 3 1/2 - 1/2=3
Second one is also c because 0.9x2=1.8
And third one c is because 2 2/3:3/1=1 1/8
9) 0.31
10) (7x10^6)-(3x10^3)
7000000-3000=6997000
6.997x10^6
Hope this helps :)
The remaining area is 20% of the previous area.
Hope this Helps!
Answer:CACA
CACA
Step-by-step explanation:
(im not sure if there is a picture of the question but i cant see it)
I think that the correct answer is C