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Remember, when subtracting mixed numbers, begin by subtracting the fractions first. Don't forget to make sure the denominators for your fractions are the same number! To change the denominators to the same number, you need to first find the least common denominator (LCD). You can do this by writing down the multiples for the two denominators you have until you find the smallest one they have in common (also known as the least common multiple -- LCM). Then, you need to multiple the numerator and denominator of the fraction by the same number. This number should change the denominator in to the LCD. When subtracting, only subtract the numerators -- leave the denominator the same! Finally, simplify the fraction if necessary.
Here's a video explaining how to add and subtract fractions!
After subtracting the fractions, subtract the whole number. Now you have your final answer!
You can also solve this problem by changing the mixed numbers into improper fractions. To do this, multiply the whole number by the denominator. Then add the numerator to that number -- this number will be your new numerator! Your denominator will stay the same. After subtracting the improper fractions, make sure to change your answer back into a mixed number! Please watch this video on subtracting improper fractions and mixed numbers!
For more practice adding and subtracting mixed fractions, play this game!
Now, I'm reading to answer question 12 again!
