You can put this solution on YOUR website!
we have the expression r+s/7
and we have values for r and s
so we substitute the values for the variables (r and s)
now we have to combine the improper fraction with the whole number 51.
we can do that several ways.
we can convert 12/7 to a whole number plus a fraction and then add it to 51
or we can convert 51 to an improper fraction also over 7 and add the two numerators and then reduce the improper fraction
the other way would have been convert 12/7 to 1 5/7 and then add 1 5/7 to 51 to get 52 5/7