got this question and some others.
i got 4and 1 third - 3 and 6 sevenths i need to know the answer and how to do it if you can help please post thanks.
Okay, I'll type as fast as I can!
1) Change to "improper fractions" 4 is because 12/3= 4. "4 and 1/3" is . Similarly 3 is because 21/7= 3. "3 and 6 sevenths" is .
So "4 and 1/3 minus 3 and 6/7" is . To add or subtract two fractions you need a "common denominator". Since 3 and 7 have no factors in common, we can just multiply the numerator and denominator of the first fraction by 7, , and multiply the numerator and denominator of the second fraction by 3, .
Now the problem is and we can simply subtract the numerators: .