Question

P=1-[(4/9+8/3)÷7/10] /
-62/27

Answer 1

A fração é extensa, mas resulta em:
$P = 1 - \frac{ \frac{ \frac{ \frac{ \frac{68}{27} }{7} }{10} }{-62} }{27} = 1$
Resolvendo:
68 / 27 = 2,5185185185
2,5185185185 / 7 = 0,3597883597
0,3597883597 / 10 = 0,03597883597
0,03597883597 / (- 62) = - 0,0005803038
- 0,0005803038 / 27 = - 0,0000214927
1 - (- 0,0000214927) ≈ 1