True or false?

Which of the following is true?

Three and three ninths plus seven and six-elevenths equals ten and eighty-seven ninety ninths
B two and three-eighths plus six and four-fifths equals eight and twelve fortieth
C three and three sevenths plus four and two-thirds equals seven and two twenty ones
D four and five-sixths plus five sevenths equal nine and ten thirteenths






Step-by-step explanation:

a1=3+93+7+116=33359=10332910.8788 a2=109987=10+9987=9910 99+87=99990+87=991077=33359=10332910.8788 a1=a2  A=1
b1=283+654=40367=9407=9.175 b2=81412=8+1412=148 14+12=14112+12=14124=762=8768.8571 b1=b2  B=0
c1=373+432=21170=82128.0952 c2=7212=7+212=217 21+2=21147+2=211497.0952 c1=c2 C=0
d1=465+75=42233=542235.5476 d2=91310=9+1310=139 13+10=13117+10=131279.7692 d1=d2 D=0

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Math student
The eighth-grade goal is ½ of the sixth-grade goal.

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