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You would have to convert the units to be alike, then you would be able to add and subtract them.
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∙ 12y ago
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Do you add and subtract like and unlike fractions in the same way?
no, to add and subtract like and unlike fractions the denominator has to be the same,
How do you add and subtract with the metric system?
use the metric conversion ladder kilo 1,000 units hecto 100 units deca 10 units base unit 1 unit deci .1 units centi .01 units milli .001 units
How do you add and subtract mixed numbers with unlike denominators?
just change the fration with the smallest denominator and add or subtract the way you always do.
When you add or subtract units of time how do you know when you have to rename?
you would have to convert the units to be alike.
What is a situation where you would use LCM?
To add and subtract unlike fractions.
When do you use LCM in math?
When you want to add or subtract unlike fractions.
Why do you need to use common denominator?
To get the right answer when you add or subtract unlike fractions.
When you add or subtract fractions with unlike denominators why do you have to find LCM?
Because to add fractions, the denominators must be equal.
How do you add and subtract unlike positive and negative fractions?
-1/2+7/10
Why do fractions need to have unlike denominator before you add or subtract them?
The question is based on a complete misunderstanding of what is required. Unlike denominators are NOT required!
Why is it important to find the LCM of 2 numbers?
It will help when you want to add and subtract unlike fractions.
Why do you have to turn unlike fractions into like fractions to add or subtract?
because its just one of the rules of math :)
