Use the ideas in drawings a and b to find the solution to gauss problem for the sum

Write the rational number in lowest terms 99/-15

Asunflower was 20 1/2 inches tall. over the next 6 months, it grew to a height of 37 inches tall. what was the average yearly growth rate of the height of the sunflower? ? plz write a proportion to solve i will give you 100 points

Simplify the given expression leaving the answer in improper fraction form. 2/3+5/6