6x + 3

7x + 1

9x + 2

9x + 3

x²y³

4 x²y³

2 x²y³

2 x³y²

x

x + 1

x + 2

(x + 1) (x + 2)

^m/n

^M/m

⁵/7

⁷/5

^5ax/3

^6xy/5

^5ab/2

5 axy

²/y²

x²/2 z²

^x/2 z²

x²/z²

^{15 pr}/4q

^{4 q}/15 pr

^{3 pq}/20 r

^{3 pq}/5 r