1. 분수 기호로 어떻게 3y^- 1x^3을 다시쓸 수 있을까요?

Using what you just learned about signs of exponents and how that relates to the side of the fraction they're on, how could you rewrite 3y- 1 x^3 in fraction notation?

2. 많은 사람들은 수학을 더하기, 빼기 곱하기, 나누기 분수, 백분율, 기하학, 대수학 등으로 생각합니다.

Many of us think of mathematics as addition, subtraction, multiplication, division, fractions, percent, geometry, algebra -- all that stuff.