168=18*x+12*2x
4 = 3x
t = 60 - (1.489 * t)
215.36 * t = 144.64 * (60-t)
215.36 x t = 144.64 x (60-t)
frac 403000 cdot 235 x 1912882.5 x 2 3188 x 3 192720 x 7898880 frac 403000 x 6376 x 2 1200 x 306000
192720x+7898880
403000⋅235x−1912882.5x
2
+3188x
3
=
1200x−306000
403000x−6376x
cos(x).(1-sen(2x))
((403000 \cdot 235x-1912882.5x^(2) +3188x^(3) ))/((192720x+7898880))=((403000x-6376x^(2)))/((1200x-306000))
+5 . 7 - 6 . 3 + (8-1) . (-4)
