Add 1 3/10 to each side: y=4 5/6+1 3/10. To add the mixed numbers, add the wholes together first: 4+1=5. To add the fractions find a common denominator, the least being 30. 5/6=25/30 and 3/10=9/30. Add these together=(25+9)/30=34/30 which is 1 4/30=1 2/15. Add the whole number 1 to the sum we did before: 5+1=6 and join it to the fraction: 6 2/15.