Уровнения.1)72-x=18*3.2)x:8=130+270.3)x-290=470+230.4)х+320=90*8.5)15*х=630:7.6)400:х=1000:10,помогите очень срочно надо....

Решите систему уравнений : x-5y=2    

x^2-y=10

проверочные слова к слову обход(ходьба ходит) улов(лов ловушка)груз(грузило погрузка)вкус(вкусно вкусить)груб(грубо грубит)хорош (хорошо хорошист)крут (круто крутит)повозка (воз возит)пирожки( пирожок пирожное)лягушка (лягушонок лягушечка)близкий (близко приблизится)робкий (робость робко)сладкий (сладость сладко) нужно выбрать проверочное слово

ПЕРЕВЕДИТЕ НА РУССКИЙ : A sailor came to his native village from sea.His parents and relatives gathered around him to listen to his adventures. And the sailor began to boast: " I was in many countries and  saw a lot of strangs things. Once our ship got to a sea of milk, in the middle of which there was a mountain of sugar and an island of cheese. And when we were in the Pacific Ocean we saw a flying fish. There flying fish can fly for a long time when the enemies are after them." Then his mother said:"I can believe that there are seas of milk and island of cheese, but I can't believe in flying fish, son."