0.6 en forma reducida :(

Cody worked 42.5 hours per week in july. this is 12.25 hours more per week than he worked in june. how many hours did cody work per week in june?

Apackage of bacon holds 15 strips of bacon. the pancake house uses 17 packages of bacon in the morning and 21 packages in the afternoon. how many more strips were used in the afternoon than the morning?

Find the difference (8ab+a+2) - (3ab+6)