21+71-(56-44)-45= 60+(69-30)-18-39= 68-55+21+42-67= 19-14+9-1+38+46= 8-7+59-47+62-43= 98-92+29+15-13= 78-(94-87)-48+39= 8+76-78+12+16= 11+14+20-(49-28)= 10+6 29+9 24+1: 13-9 9+10 5+5 17-0 45- 24+
Ответы
Ответ:
=35
Пошаговое объяснение:
21+71-(56-44)-45= 60+(69-30)-18-39= 68-55+21+42-67= 19-14+9-1+38+46= 8-7+59-47+62-43= 98-92+29+15-13= 78-(94-87)-48+39= 8+76-78+12+16= 11+14+20-(49-28)= 10+6 29+9 24+1: 13-9 9+10 5+5 17-0 45- 24+
=35
1) 21 + 71 - ( 56 - 44 ) - 45 = 92 - 12 - 45 = 92 - ( 12 + 45 ) = 92 - 57 =
= 35.
2) 60 + ( 69 - 30 ) - 18 - 39 = 60 + 39 - 18 - 39 = 99 - 18 - 39 = 42.
3) 68 - 55 + 21 + 42 - 67 = 13 + 21 + 42 - 67 = 34 + 42 - 67 = 76 - 67 = 9.
4) 19 - 14 + 9 - 1 + 38 + 46 = 5 + 8 + 38 + 46 = 13 + 84 = 97.
5) 8 - 7 + 59 - 47 + 62 - 43 = 1 + 59 - 47 + 62 - 43 = 60 - 47 + 62 - 43 =
= 75 - 43 = 32.
6) 98 - 92 + 29 + 15 - 13 = 6 + 29 + 15 = 35 + 15 = 50.
7) 78 - ( 94 - 87 ) - 48 + 39 = 78 - 7 - 48 + 39 = 71 - 48 + 39 = 23 + 39 =
= 62.
8) 8 + 76 - 78 + 12 + 16 = 6 + 12 + 16 = 18 + 16 = 34.
9) 11 + 14 + 20 - ( 49 - 28 ) = 25 + 20 - ( 49 - 28 ) = 45 - 21 = 24.
________________________________________________________
1. 13 - 9 = 4; 9 + 10 = 19; 5 + 5 = 10; 17 - 0 = 17; 45 - 24 = 21.