Автор - Устинова Алла
463 - ( 238 + 121 ) = 463 - 359 = 104;n
( 823 + 102 ) - ( 312 + 271) = 925 - 583 = 342; n
( 850 - 841 ) * ( 723 - 715 ) = 9 * 8 = 72;n
2 * 5 ( 3 * 6 - 16 + 1 ) = 10 * ( 18 - 16 + 1 ) = 10 * 3 = 30; n
( 31 - 29 ) * ( 76 - 67 ) + 34 = 2 * 9 + 34 = 18 + 34 = 52;n
[( 100 - 25 ) - ( 85 - 15 )] * 5 = ( 75 - 70 ) * 5 = 5 * 5 = 25. n