how do you find the anwser to a fraction with diff. denominators?

Answer 1

u make the denominators the same by finding/using the common denominator..... or factors

Answer 2

To Subtract Fractions with different denominators:

Find the Lowest Common Denominator (LCD) of the fractions
Rename the fractions to have the LCD
Subtract the numerators of the fractions
The difference will be the numerator and the LCD will be the denominator of the answer.
Simplify the Fraction

To Add Fractions with different denominators:

Find the Least Common Denominator (LCD) of the fractions
Rename the fractions to have the LCD
Add the numerators of the fractions
Simplify the Fraction


Comparing Fractions with Different Denominators

When fractions with the same numerator but different denominators are compared, we have the same number of pieces but if the denominator is larger then the object was divided into more pieces so each piece would be smaller. Only the denominators needs to be compared to tell whether one fraction is larger, smaller or the same as another fraction with the same numerator
If there are two denominators we can compare them. One denominator is either greater than, less than or equal to the other denominator. If the numerators are the same then the fraction that has the largest denominator is the smallest fraction. The fraction with the smaller denominator but the same numerator is larger. If both the numerators and denominators are the same, then the fractions are equal to each other.

Answer 3

To find the answer to a fraction with different denominators, first make the denominators the same by finding their lowest common multiple, then use the numerators to divide the new denominator in turn, For example, if you are to calculate 2/3+4/5,the lowest common multiple of 3 and 5 is 15. 15 is now your new denominator; your answer will then be: (3/15x2)+(5/15x4) =(10+12)/15=22/15=(1)7/15. OR 1.666'

Answer 4

Find a common demoninator (Multiplying the demoninators is the fastest way to do this). Then multiply the top numerator by the same number as you had to get the new demoninator.

ex.
if you had 3/5 and 2/3
your new fractions would be 9/15 and 10/15

Answer 5

depends on which is the operation,
in adds and subtractions
multiply the denominators which leaves you a common denominator then dividing this with the original denominator of each fraction and multiply the answer to de numerator and do the operation in the regular way

multiplications
multiply all the numerators that's the numerators answer
and all the denominators that's the denominators answer

divisions
multiply the numerator of the first fraction to a denominator of the second one and put it in the numerator of the answer, then multiply the denominator of the first ine woth the numerator of the second one and put it in the denominator of the answer

Answer 6

are you adding and subtracting? if so, find the lowest number that can be divided by both denomonators (the lowest common demomonator). Divide the lowest common denomonator by the individual fraction's denominator. Then multiply the numerator by this number. Repeat for both fractions. They should now have the same denomonators, and can be added or subtracted. If you are multiplying, you do the same as if they had the same denominators. If you are dividing, multiply the numerator fraction by the reciprocal of the denomonator fraction.

Answer 7

simply find the l.c.m