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Ответ

Ответ дан
дуремарик

Ответ:

344

Пошаговое объяснение:

для удобства составим системку решая задачу  задом наперёд

x+y=11-4

(10x+y)*8=100y+x+40

решение:

x+y=7

y=7-x

(10x+7-x)*8=100*(7-x)+x+40

(9x+7)*8=700-100x+x+40

72x+56=700-99x+40

72x+99x=700+40-56

171x=684

x=684/171

x=4

y=7-4

y=3

100*3+4+40=344

проверка:

3+4+4=11

344/8=43

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