Select like monomials is each polynomials, if any:

$7-3x+8$

Select like monomials is each polynomials, if any:

$a+b+2a-c$

Select like monomials is each polynomials, if any:

$a+3b-c+5b$

Select like monomials is each polynomials, if any:

$2xy-5xz+4yz-yz$

Select like monomials is each polynomials, if any:

$m{n}^2+m^2{n}^2-2m^{2}n+6m^2{n}^2$

Select like monomials is each polynomial, if any:

$2a{b}^2{c}^2-7a^{2}bc+9a^2{b}^2{c}^2+8a^{2}b{c}^2$

Select like monomials is each polynomials, if any:

$8(r+s)-3(r+s)+5(r-s)$

State the degree of each polynomial.

$-\frac{19}{15}$

State the degree of each polynomial.

$\frac{16}{31}{y}^{100}$