11+4=15, 21+21=42, 2+7=9, 15+12=27, 13-11=2, 48-48=0, 4-13=-9, 15*1=15, 4-1=3, 21+1=22, 5+7=12, (4-2)*2=4.
11-2774+91993+₽-7283-3-+8383
11+4=15, 21+21=42, 2+7=9, 15+12=27, 13-11=2, 48-48=0, 4-13=-9, 15*1=15, 4-1=3, 21+1=22, 5+7=12, (4-2)*2=4.
11-2774+91993+₽-7283-3-+8383