Which of the following is true? three and two fifths plus four and two sevenths equals seven and four twelves
two and five eighths plus six and one sixth equals eight and six twenty fourths
four and eight tenths plus five and two sixths equals ten and eight sixtieths
six and seven twelves plus three and nineteen twenty fourths equals nine and nine twenty fourths

Which of the following is true?

three and three ninths plus seven and six elevenths equals ten and eighty seven ninety ninths
two and three eighths plus six and four fifths equals eight and twelve fourtieths
three and three sevenths plus four and two thirds equals seven and two twenty ones
four and five sixths plus five sevenths equals nine and ten thirteenths