i really recommend the first five videos of the sequence that starts with this one (all on solving equations). the one we started in class today about simultaneous equations is called system of equations.
a series about exponentials (exponent rules) can be found here and in the following videos after that - it is worth reviewing! he also has some workedexamples on fractions and exponents.
come see me in the mornings, thursday after school or mondays/tuesdays after 3h40 pm with extra doubts and/or hw quiz/quiz corrections.