Math

math too

100

(6a²/5b) / (21a/10b²)

4a²b/7

200

(x²/4) / (x²/4)-(4/x)

x³/x³-16

300

(8/y)-(4) / (12)-(24/y)

-1/3

400

(5q/q)+(1) / (1)-(q/q+1)

5q

also more math

100

(8x²+24x/x²-9) / (2x)/15-5x)

-20

200

(1)-(a/a-b)/(1)/(a-b)

-b

300

(1/r)+(1/s) / (1/r²)-(1/s²)

rs/s-r

400

(w+4/4)+(1/2) / (3/w)+(1/2)

w/2

500

(2/x+3)-(1/3) / (x²/3)-3

-1/(x+3)²