Выберите уравнение с наименьшим корнем и решит его:

 

а)8274*3-у =1 908

8274 : 3 - у =1 908

у - 8274 *3 =1 908

 

б) 1 284 : d = 12 090 - 12 078

1 284 : d = 12 090 - 12 066

1284 : d = 12 090 - 12 084

 

Заранее Спасибо ^^

Поставить глаголы в нужную форму

One day when Pooh Bear already (1.visit) some of his friends and had nothing else to do, he (2.think) he (3.go) round to Piglet`s house (4. see) what Piglet (5. do). It (6.snow) since early morning. Pooh (7.expect) (8.find) Piglet (9.warm) his toes in front of his fire, but to his surprise he (10.see) that the door (11.be) open, and the more he (12.look) inside the more Piglet (13.not, be) there. "So what I (14.do)," said Pooh, "is this. I (15.go) home first and see what the time (16.be), and perhaps I (17.put) a scarf round my neck, and then I (18.go) and (19.see) Eeyore ahd (20.sing) my new hum to him." He (21.hurry) back to his own house; when he (22.open) his door he suddenly (23.see) Piglet (24.sit) in his best armchair and looking as if he (25.sit) there for a long time. Pooh could only (26.stand) there (27.wonder) whose he (28.be) in. "Hallo, Piglet," he said. "I (29.think) you (30.be) out." "No," said Piglet."it`s you who (31.be) out. I (32.sit) here for an hour already." Pooh (33.look) up at his clock, which (34.stop) at five minutes to eleven some weeks before. "Nearly eleven o`clock," said Pooh happily. "You (35.be) just in time for a little something," and he (36.put) his head into the cupboard. "And then we (37.go) out, Piglet, and (38.sing) my song to Eeyore". "Which song, Pooh?" "The one we (39.be) going to sing to Eeyore," (40.explain) Pooh. The clock (41.show) still five minutes to eleven when Pooh and Piglet (42.set) out on their way half an later.

помогите решить химические уравнения в рабочей тетради химия 9 класс автор ЕРЁМИН.тема галогены

докажите что для любой арифметической прогрессии справедливо соотношение:

1)а13-а3=10d

2)An+10  - A10 = nd