20/17496
(x2)3
23/17496
53/1458
(-0.05115303983-( -0.0951743988)) ^2+ (-0.1391957578- ( -0.0951743988)) ^2
(1-sen^2(y))*csc(y)=1
7 + (-20) - (0.2 x 10) x -4
3^10×5
2^2×3^9
