first you get the denominators the same then you multiply the number you multiplied to the denominator to the numerator then you add the two numerators together and keep the denominators the same then if needed you simplify
It depends what you are doing with the fractions. If you are multiplying or dividing fraction, the denominators do not need to be the same and the calculation can be carried out immediately. If you are adding or subtracting fractions, the denominators must be the same; if you have different denominators, the fractions must first be changed into equivalent fractions with the same denominator. When the denominators are the same (or have been made the same as equivalent fractions from being different) the calculation can be carried out.
Common denominators are multiples that are being used as denominators. The process to find them is the same.
They are the same denominators.
get the common dinominators and do what u did to the denominator to the numerator!. ex: if I had three fractions with different denominators then I would multiply the denominators till they are the same number then with the number I multiplied with on the bottom I would multiply on to the top!
Not always but they need to have the same denominators when adding or subtracting them.
The LCD of two fractions is the same as the LCM of their denominators.
Adding and subtracting fractions can ONLY be done if the denominators are the same; then the calculation is done by adding or subtracting the numerators. Multiplying (and dividing) fractions does not require the denominators to be the same. To divide by a fraction the divisor is inverted (the original numerator becomes the new denominator and the original denominator becomes the new numerator) and then the fractions are multiplied. Multiplying fractions is achieved by multiplying the numerators together AND multiplying the denominators together. A whole number is the same as a fraction with the whole number as the numerator and a denominator of 1, so when multiplying by a whole number the denominator is multiplied by 1 (leaving it the same) and the is multiplication is effectively just multiplying the numerator by the whole number.
Common multiples and common denominators can be found using the same process. They differ in their function. Common denominators are common multiples that are functioning as denominators.
you must make the denominators the same first in order to add them once they are added, the denominators stay the same and the top combines
When the denominators are the same, whichever one has the greater numerator is greater.
They are not different.