<Tr> <Td> 6 </Td> <Td> + </Td> <Td> </Td> <Td> = </Td> <Td> 7 </Td> </Tr> <Tr> <Td> 6 </Td> <Td> + </Td> <Td> </Td> <Td> = </Td> <Td> 8 </Td> </Tr> <Tr> <Td> 6 </Td> <Td> + </Td> <Td> </Td> <Td> = </Td> <Td> 9 </Td> </Tr> <Tr> <Td> 6 </Td> <Td> + </Td> <Td> </Td> <Td> = </Td> <Td> 10 </Td> </Tr>

Why is there only one answer for the length of a side