Question

Subtract and reduce to lowest terms. 3 3/7 - 2 1/5=
1 1/8
1 1/35
1 4/17
None of these choices are correct.

Answer 1

Answer:

None of the choices.

Step-by-step explanation:

Fraction subtraction:

• Convert mixed fraction to improper fraction.
• Find the LCM of the denomiators.
• Find equivalent fractions.
• Now subtract and convert the improper fraction to mixed fraction.

         $3\dfrac{3}{7}=\dfrac{24}{7}\\\\2\dfrac{1}{5}=\dfrac{11}{5}\\\\\\\text{LCM of 7 and 5 is 35}\\\\\dfrac{24*5}{7*5}=\dfrac{120}{35}\\\\\dfrac{11*7}{5*7}=\dfrac{77}{35}\\\\3\dfrac{3}{7}-2\dfrac{1}{5}=\dfrac{24}{7}-\dfrac{11}{5}$

                       $\sf =\dfrac{120-77}{35}\\\\=\dfrac{43}{35}\\\\=1\dfrac{8}{35}$