put a 1 under the 13, so it is 13/1, and 5 5/6, turn it into an improper fraction by multiplying 5x6=30. then 30+5, which is 35. so just keep the denominator, which would be 35/6. so you would have 13/1 - 35/6. you need the same denominator, so see what both 1 and 6 would fit into. which is 6. so 13x6 which is 78, so 78/6 - 35/6, so 78-35 is 43. so 43/6, then simplify, which is 7 1/6
When you subtract them you get the answer 57.99
U^2(2u+3)+7(2u+3)
(u^2+7)(2u+3)
1888888888888888888777754%&-76$$
The ratio would be 16:14 and then simplify it to 8:7
