how do you subtract fractions with unlike denominators?
121243
To subtract fractions with unlike denominators, rename the fractions with a common denominator. Then subtract and simplify. The LCM of 3 and 11 is 33 .
275626
To subtract any percentage from a number, simply multiply that number by the percentage you want to remain. In other words, multiply by 100 percent minus the percentage you want to subtract, in decimal form.
76422
['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.']
19410
['Make sure the bottom numbers (the denominators) are the same.', 'Subtract the top numbers (the numerators). Put the answer over the same denominator.', 'Simplify the fraction (if needed).']
21544
['Find the smallest multiple (LCM) of both numbers.', 'Rewrite the fractions as equivalent fractions with the LCM as the denominator.']
599892
['Multiply the two terms on the bottom to get the same denominator.', 'Multiply the top number on the first fraction by the bottom number of the second fraction to get the new top number of the first fraction.']
1219035
First subtract the whole numbers, then subtract the fractional parts. You may get a negative fraction. Treat that as another subtraction problem, and subtract once more to get the final answer.
1059972
If the whole number is odd, divide it in half and round the decimal down to the nearest whole number. Add the numerator and denominator of the fraction together to get the new numerator. Multiply the old denominator by 2 to get the new denominator. For example, to halve 3 1/2, divide 3 / 2 = 1.5 (round down to 1).
185620
['Cross-multiply the two fractions and subtract the second number from the first to get the numerator of the answer. ... ', 'Multiply the two denominators together to get the denominator of the answer. ... ', 'Putting the numerator over the denominator gives you your answer.']
262440
['Find the LCM [Least common multiple] of both the expressions.', 'Change each of the polynomial fractions to make their denominators equal to the LCD.', 'Subtract both the expressions.']
11009
To subtract algebraic fractions, first express them in terms of their Lowest Common Denominator (LCD) and then subtract their numerators to obtain the numerator that is divided by the LCD to arrive at the answer.
19908
['Step 1: Make sure the bottom numbers (the denominators) are the same.', 'Step 2: Add the top numbers (the numerators), put that answer over the denominator.', 'Step 3: Simplify the fraction (if needed)']
24800
To subtract mixed numbers, subtract the whole number parts of the mixed numbers and then subtract the fraction parts in the mixed numbers. Finally, combine the whole number answer and the fraction answer to express the answer as a mixed number. Subtract. Simplify the answer and write as a mixed number.
63991
Then stick the negative sign to your answer. When subtracting negative fractions, you are, in effect, adding the positive complement of the negative fraction you are subtracting, because subtracting a negative number or fraction is the same as adding the positive of that negative fraction or number.
1408150
['Check the denominators.', 'If denominators are unlike, make common denominators.', 'Look at the sign.', 'Add/Subtract just the numerators.', 'Simplify your answer.']
880880
['Make sure the bottom numbers (the denominators) are the same.', 'Subtract the top numbers (the numerators). ... ', 'Simplify the fraction (if needed).']
73648
['You must have a common denominator.', 'To find the Least Common Denominator (LCD), take the least common multiple of the individual denominators.', 'Express each fraction as a new fraction with the common denominator, ... ', 'To add fractions with the same denominator:']