Please help I haven't paid my taxes, the IRS is after me but I wanna watch the Superbowl :(

You have 17 cats that live in houses on your street, 24 dogs, 3 fish, and 4 hamsters. what percent of animals on your block are dogs?

Idon't get undoing if its pass adding and subtracting so can someone ? x-2 over 5 = 18

Answer asap. you begin with 1/2 scoop of ice cream. since you're hungry, you ask the vendor for 2/7 more scoops of ice cream. then, you eat 5/8 scoops. how many scoops of ice cream are left on your cone? i will mark brainliest for first correct answer.