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

None of the choices.

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(3)/(7)=(24)/(7)\\\\2(1)/(5)=(11)/(5)\\\\\\\text{LCM of 7 and 5 is 35}\\\\(24*5)/(7*5)=(120)/(35)\\\\(11*7)/(5*7)=(77)/(35)\\\\3(3)/(7)-2(1)/(5)=(24)/(7)-(11)/(5)\\`

`\sf =(120-77)/(35)\\\\=(43)/(35)\\\\=1(8)/(35)`