2/5+3/10
sin x cos(x - 60) = 0
10x-5x^2=75
make the multiples of ad+dc+df
45^45=248063644451341145494649182395412689744530581492654164321720600128173828125
4^-3
10t-5t^2=75
10t-5t^2
5x
4
+3=5+
16*60
