SOLUTION: Hello Tutors, In class today (pre algebra) teacher wrote on board 3 2/3 - 2 3/4 I know the answer is 11/12 but how did he get there...he wrote 44/12 - 33/12 to get 11/12 but

Algebra ->  Numeric Fractions Calculators, Lesson and Practice -> SOLUTION: Hello Tutors, In class today (pre algebra) teacher wrote on board 3 2/3 - 2 3/4 I know the answer is 11/12 but how did he get there...he wrote 44/12 - 33/12 to get 11/12 but       Log On


   

Question 991447: Hello Tutors,
In class today (pre algebra) teacher wrote on board 3 2/3 - 2 3/4 I know the answer is 11/12 but how did he get there...he wrote 44/12 - 33/12 to get 11/12 but how did he get 44 and 33?

Answer by MathLover1(20849) About Me  (Show Source):
You can put this solution on YOUR website!
3+2%2F3 and 2 3%2F4 are mixed numbers and, to subtract them, we convert both into improper fractions
3+2%2F3=9%2F3%2B+2%2F3=11%2F3
2 3%2F4 =8%2F4%2B3%2F4 =11%2F4
to subtract 11%2F3-11%2F4 we need find common denominator for 3 and 4 and it is 12
so,