Пошаговое объяснение:
20- (3+5)=12
30-7-2)=21
40 -(8-2)=34
30 +(2+7)=39
50 + (6 - 4)=52
20 +(2+6)=28
50 +(3+6)=59
40 + (9-5)=44
70 +(7-6)=71
80+ (3-2)=81
70 + (5-4)=71
30+ (5+4)=39
12,21,34,39,52,28,59,44,71,81,71,39
Пошаговое объяснение:
20- (3+5)=12
30-7-2)=21
40 -(8-2)=34
30 +(2+7)=39
50 + (6 - 4)=52
20 +(2+6)=28
50 +(3+6)=59
40 + (9-5)=44
70 +(7-6)=71
80+ (3-2)=81
70 + (5-4)=71
30+ (5+4)=39
12,21,34,39,52,28,59,44,71,81,71,39