Question

решаем уравнение 1-(2-(3-...-(1000-×)...)=1000×

Answer 1

1-(2-(3-...-(1000-×)...)=1000×1- 2+ 3 - 4+ 5 - 6...+999 - 1000 +х = 1000 х
 - 500 = 1000х+х
1001 х = - 500
х = - 500/1001