Предмет: Математика, автор: zulyaarslanowa

☆+☆+☆+○=-60
☆-○+☆=-40
☆:(◇+○+◇)=-5
(☆+○):◇=? Какое число надо записать вместо вопросительного знака ?

Ответы

Автор ответа: tgs77
1
-10gg-_-_-_-_-_-_-_- вы серьёзно
Автор ответа: nina89093261025
1

Решение

(−20)+(−20)+(−20)+0=−60

(−20)+0+(−20)=−40

(−20):(2+0+2)=−5

(−20+0):2=−10

Ответ: −10.

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St. Petersburg is one of the most beautiful and amazing cities in the world. It was founded in 1703 by Peter the Great. Nowadays it is the second largest city in Russia and the third largest city in Europe, with the population of more than 5 million people. It is situated on the Neva River at the head of the Gulf of Finland on the Baltic Sea. The city's other names were Petrograd and Leningrad. St. Petersburg was the capital of Russia from 1712 till 1918.
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