MaxWong

$\text{base}\rightarrow a^{b\leftarrow\text{exponent or index}}$

Seems like you don't know what's a-(-b)

$\boxed{a-(-b)=a+b}$

-5+3-(-1) <---- until here you are still correct.

= -5 + 3 + 1

= 4 - 5

= -1

0/0 is undefined.

You have no cookies(that's sad), and you have no friends(that's even more sad), how could you divide the cookies into 0 proportions?

Mathematics cannot affect relations.

We don't know who is Tia.

Also we cannot prove that Tia is a nice person by means of equations.

Mathematics have its limits.

Remainder = 4x + 4.

$\boxed{\int^{2}_{-1}pq\;\mathtt{dp}\\=q([\dfrac{p^2}{2}]^{2}_{-1})\leftarrow\boxed{\int p \mathtt{dp}=\dfrac{p^2}{2}}\\=q(\dfrac{2^2}{2}-\dfrac{(-1)^2}{2})\\=\dfrac{3q}{2}}$

17(x-y) +9(x-y)

= (17+9)(x-y)

= 26(x-y)

= 26x - 26y.