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To add fractions the denominators must be the same.
- When the denominators are the same, just add the numerators keeping the denominator for the result, and then simplify the result, eg 1/8 + 3/8 = 1+3/8 = 4/8 = 1/2;
- If the denominators are different, make the fractions into equivalent fractions with the same denominator, and then use rule 1, eg 1/3 + 1/2 = 2/6 + 3/6 = 2+3/6 = 5/6
4/7 + 2/7=
NEVER ADD THE DENOMINATORS!
So you add 4 + 2= 6
Then put 6/7 Because you keep the same Denominator.
Easy now you can add fractions with the same denominators! :)
Hope this helps!
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Why do you need you need to have a common dinominator before you add or subtract them?
What do you get when you add 1/2 and 1/4 ? You can't even do that simple addition without first changing both fractions to something common, even if you do it in your head and do it so fast that you don't realize you're doing it. The only answer to the question is simply: There's no way to add or subtract fractions if they don't have the same denominator, and if you do, then you get the wrong answer.
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,
When you add fractions do they have to have the same denominator?
Yes you have to add with the same denominator. when ever you do fractions they have to have the same denominator no matter what. So thats a yes
How do you add two fractions with the same denominator?
numerators you add, denominators you leave it the same
How do you add fractions with same numerator?
if it has a denominator
